O'Brien v. Cessna Aircraft Co. , 298 Neb. 109 ( 2017 )


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  • Nebraska Supreme Court Online Library
    www.nebraska.gov/apps-courts-epub/
    11/03/2017 09:13 AM CDT
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    Nebraska Supreme Court A dvance Sheets
    298 Nebraska R eports
    O’BRIEN v. CESSNA AIRCRAFT CO.
    Cite as 
    298 Neb. 109
    Patrick O’Brien, appellant, and Suburban A ir Freight, Inc.,
    and Liberty Mutual I nsurance Company, appellees,
    v. Cessna A ircraft Company and Goodrich
    A erospace Company, appellees.
    ___ N.W.2d ___
    Filed November 3, 2017.   No. S-15-1212.
    1.	 Products Liability. The central question in any claim based on strict
    liability in tort is whether the product was defective.
    2.	 ____. Defects usually fall into one of three categories: design defects,
    manufacturing defects, or warning defects.
    3.	 Products Liability: Expert Witnesses: Circumstantial Evidence:
    Proof. The best means of proving a defect is expert testimony pointing
    to a specific defect. But in lieu of pleading and proving a specific defect,
    plaintiffs have been permitted to prove an unspecified defect in the war-
    ranted product through circumstantial evidence using what is commonly
    referred to as the “malfunction theory.”
    4.	 Products Liability: Proof. Under the malfunction theory, also some-
    times called the indeterminate defect theory or general defect theory, a
    plaintiff may prove a product defect circumstantially, without proof of
    a specific defect, when (1) the incident causing the harm was of a kind
    that would ordinarily occur only as the result of a product defect and (2)
    the incident was not, in the particular case, solely the result of causes
    other than a product defect existing at the time of sale or distribution.
    5.	 ____: ____. The malfunction theory, which permits a plaintiff to prove
    a product defect circumstantially without proof of any specific defect, is
    not available when specific defects are alleged.
    6.	 Pretrial Procedure: Appeal and Error. Decisions regarding discovery
    are directed to the discretion of the trial court, and will be upheld in the
    absence of an abuse of discretion.
    7.	 Pretrial Procedure: Proof: Appeal and Error. The party asserting
    error in a discovery ruling bears the burden of showing that the ruling
    was an abuse of discretion.
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    Nebraska Supreme Court A dvance Sheets
    298 Nebraska R eports
    O’BRIEN v. CESSNA AIRCRAFT CO.
    Cite as 
    298 Neb. 109
    8.	 Judgments: Words and Phrases. A judicial abuse of discretion exists
    when the reasons or rulings of a trial judge are clearly untenable,
    unfairly depriving a litigant of a substantial right and denying just
    results in matters submitted for disposition.
    9.	 Trial: Evidence: Appeal and Error. A trial court has the discretion to
    determine the relevancy and admissibility of evidence, and such deter-
    minations will not be disturbed on appeal unless they constitute an abuse
    of that discretion.
    10.	 Rules of Evidence: Hearsay: Appeal and Error. Apart from rulings
    under the residual hearsay exception, an appellate court reviews for
    clear error the factual findings underpinning a trial court’s hearsay rul-
    ing and reviews de novo the court’s ultimate determination to admit evi-
    dence over a hearsay objection or exclude evidence on hearsay grounds.
    11.	 Evidence: Appeal and Error. In a civil case, the admission or exclu-
    sion of evidence is not reversible error unless it unfairly prejudiced a
    substantial right of the complaining party.
    12.	 Trial: Evidence: Appeal and Error. Because authentication rulings
    are necessarily fact specific, a trial court has discretion to determine
    whether evidence has been properly authenticated. An appellate court
    reviews the trial court’s ruling on authentication for abuse of discretion.
    13.	 Judgments: Words and Phrases: Appeal and Error. An abuse of
    discretion, warranting reversal of a trial court’s evidentiary decision on
    appeal, occurs when a trial court’s decision is based upon reasons that
    are untenable or unreasonable or if its action is clearly against justice or
    conscience, reason, and evidence.
    14.	 Products Liability: Proof. A plaintiff in a strict liability case may rely
    on evidence of other similar accidents involving the product to prove
    defectiveness, but the plaintiff must first establish that there is a substan-
    tial similarity of conditions between the other accidents and the accident
    that injured the plaintiff.
    15.	 Products Liability: Proof: Notice. In a strict liability case, the propo-
    nent of the evidence bears the burden to establish the similarity between
    the other accidents and the accident at issue before the evidence is
    admitted. The proffered evidence must satisfy the substantial similar-
    ity test for it to be properly admitted into evidence, whether to prove
    defect, causation, or knowledge/notice. Substantial similarity is satisfied
    when the prior accidents or occurrences happened under substantially
    the same circumstances and were caused by the same or similar defects
    and dangers.
    16.	 Trial: Evidence: Appeal and Error. The exclusion of evidence is ordi-
    narily not prejudicial where substantially similar evidence is admitted
    without objection.
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    298 Nebraska R eports
    O’BRIEN v. CESSNA AIRCRAFT CO.
    Cite as 
    298 Neb. 109
    17.	 Trial: Evidence: Testimony. Where the information contained in an
    exhibit is, for the most part, already in evidence from the testimony of
    witnesses, the exclusion of the exhibit is not prejudicial.
    18.	 Trial: Evidence: Juries. A motion in limine is only a procedural step to
    prevent prejudicial evidence from reaching the jury. It is not the office
    of such motion to obtain a final ruling upon the ultimate admissibility of
    the evidence.
    19.	 Trial: Evidence: Proof: Appeal and Error. Because overruling a
    motion in limine is not a final ruling on the admissibility of evidence
    and does not present a question for appellate review, a question concern-
    ing the admissibility of evidence which is the subject of a motion in
    limine must be raised and preserved for appellate review by an appropri-
    ate objection or offer of proof during trial.
    20.	 Rules of Evidence. Authentication or identification of evidence is a
    condition precedent to its admission and is satisfied by evidence suf-
    ficient to prove that the evidence is what the proponent claims.
    21.	 Trial: Evidence. A court must determine whether there is sufficient
    foundation evidence for the admission of physical evidence on a case-
    by-case basis.
    22.	 Rules of Evidence: Proof. 
    Neb. Rev. Stat. § 27-901
     (Reissue 2016)
    lists, by way of illustration, 10 means of adequately authenticating a
    document.
    23.	 Pleadings: Evidence: Waiver: Words and Phrases. A judicial admis-
    sion is a formal act done in the course of judicial proceedings which is
    a substitute for evidence, thereby waiving or dispensing with the pro-
    duction of evidence by conceding for the purpose of litigation that the
    proposition of fact alleged by the opponent is true.
    24.	 Pleadings: Evidence. Similar to a stipulation, a judicial admission must
    be unequivocal, deliberate, and clear.
    25.	 Rules of Evidence: Hearsay. Hearsay is not admissible except as pro-
    vided by the Nebraska Evidence Rules.
    26.	 Rules of Evidence: Hearsay: Proof. The party seeking to admit a busi-
    ness record under 
    Neb. Rev. Stat. § 27-803
    (5)(a) (Reissue 2016) bears
    the burden of establishing foundation under a three-part test. First, the
    proponent must establish that the activity recorded is of a type that
    regularly occurs in the course of the business’ day-to-day activities.
    Second, the proponent must establish that the record was made as part
    of a regular business practice at or near the time of the event recorded.
    Third, the proponent must authenticate the record by a custodian or
    other qualified witness.
    27.	 Trial: Witnesses: Proof. In order to predicate error upon a ruling of
    the court refusing to permit a witness to testify, or to answer a specific
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    O’BRIEN v. CESSNA AIRCRAFT CO.
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    question, the record must show an offer to prove the facts sought to
    be elicited.
    28.	   Summary Judgment: Appeal and Error. An appellate court will
    affirm a lower court’s grant of summary judgment if the pleadings and
    admitted evidence show that there is no genuine issue as to any material
    facts or as to the ultimate inferences that may be drawn from those facts
    and that the moving party is entitled to judgment as a matter of law.
    29.	   Jurisdiction: States. When there are no factual disputes regarding state
    contacts, conflict-of-law issues present questions of law.
    30.	   Judgments: Appeal and Error. When reviewing questions of law, an
    appellate court has an obligation to resolve the questions independently
    of the conclusion reached by the trial court.
    31.	   Courts: Jurisdiction: States. In answering any choice-of-law question,
    a court first asks whether there is any real conflict between the laws of
    the states.
    32.	   Jurisdiction: States. An actual conflict of law exists when a legal issue
    is resolved differently under the law of two states.
    33.	   Constitutional Law: Damages: Penalties and Forfeitures. Under
    Nebraska law, punitive, vindictive, or exemplary damages contravene
    Neb. Const. art. VII, § 5, and thus are not allowed in this jurisdiction.
    34.	   Jurisdiction: States: Contracts: Torts. Once a court determines there
    is a conflict of law between two states, the next step is to classify the
    nature of the specific conflict issue, because different choice-of-law
    rules apply depending on whether the cause of action sounds in contract
    or in tort.
    35.	   Torts: Appeal and Error. To resolve conflicts of law involving tort
    liability, the Nebraska Supreme Court consistently has applied the
    Restatement (Second) of Conflict of Laws § 146 (1971).
    36.	   Jury Instructions. Whether the jury instructions given by a trial court
    are correct is a question of law.
    37.	   Jury Instructions: Proof: Appeal and Error. To establish reversible
    error from a court’s failure to give a requested instruction, an appellant
    has the burden to show that (1) the tendered instruction is a correct
    statement of the law, (2) the tendered instruction is warranted by the
    evidence, and (3) the appellant was prejudiced by the court’s failure to
    give the tendered instruction.
    38.	   Jury Instructions: Appeal and Error. Jury instructions do not consti-
    tute prejudicial error if, taken as a whole, they correctly state the law,
    are not misleading, and adequately cover the issues supported by the
    pleadings and evidence.
    39.	   Trial: Jury Instructions: Negligence. A trial court is not required to
    submit repetitious allegations of the same act of negligence.
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    O’BRIEN v. CESSNA AIRCRAFT CO.
    Cite as 
    298 Neb. 109
    40.	 Torts: Jury Instructions. The Nebraska Supreme Court has consist­
    ently condemned the practice of instructing the jury in haec verba and,
    instead, has placed the duty squarely upon the trial court to properly
    analyze, summarize, and submit the substance of the numerous allega-
    tions of negligence in tort petitions.
    41.	 Costs: Appeal and Error. The decision of a trial court regarding taxing
    of costs is reviewed for an abuse of discretion.
    42. 	Costs. The costs of litigation and expenses incident to litigation may
    not be recovered unless provided by statute or a uniform course of
    procedure.
    43.	 Torts: Costs. Under 
    Neb. Rev. Stat. § 25-1710
     (Reissue 2016), a suc-
    cessful defendant in a tort action is ordinarily entitled to an award of
    costs as a matter of course upon a judgment in his or her favor.
    44.	 Depositions: Costs. Deposition costs are properly taxable and recover-
    able under 
    Neb. Rev. Stat. § 25-1710
     (Reissue 2016).
    45.	 ____: ____. Unless it appears that the depositions were not taken in
    good faith or were actually unnecessary, costs of taking them are prop-
    erly taxable under 
    Neb. Rev. Stat. § 25-1710
     (Reissue 2016), even if
    the depositions were not used at trial. The questions of good faith and
    reasonable necessity are for the trial court to determine.
    Appeal from the District Court for Douglas County: Leigh
    A nn R etelsdorf, Judge. Affirmed.
    Arthur A. Wolk, Bradley J. Stoll, and Cynthia M. Devers,
    of Wolk Law Firm, David A. Domina, of Domina Law Group,
    P.C., L.L.O., and Robert W. Mullin, of Houghton, Bradford &
    Whitted, P.C., L.L.O., for appellant.
    John C. Nettels, Jr., and Robin K. Carlson, of Stinson,
    Leonard & Street, L.L.P., and Bryan S. Hatch, of Likes,
    Meyerson & Hatch, L.L.C., for appellee Cessna Aircraft
    Company.
    Elizabeth B. Wright and Andrew H. Cox, of Thompson
    Hine, L.L.P., and William R. Johnson and Brian J. Brislen,
    of Lamson, Dugan & Murray, L.L.P., for appellee Goodrich
    Aerospace Company.
    Heavican, C.J., Miller-Lerman, Cassel, Stacy, K elch, and
    Funke, JJ.
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    Nebraska Supreme Court A dvance Sheets
    298 Nebraska R eports
    O’BRIEN v. CESSNA AIRCRAFT CO.
    Cite as 
    298 Neb. 109
    Stacy, J.
    I. NATURE OF CASE
    This tort action was filed by a pilot who was injured when
    the plane he was flying crashed on approach to the airport in
    Alliance, Nebraska. After a 4-week trial, the jury returned a
    general verdict for the defendants. The pilot appeals, assert-
    ing 65 assignments of error. We affirm the judgment of the
    district court.
    II. BACKGROUND
    Patrick O’Brien was employed as a commercial pilot flying
    mail overnight between Alliance, North Platte, and Omaha,
    Nebraska. In February 2007, he was seriously injured when
    the Cessna 208B Caravan he was flying crashed through the
    roof of a metal building and into a utility pole during a non-
    precision approach to the Alliance airport. The impact occurred
    at approximately 2:25 a.m. in heavy fog and below freez-
    ing temperatures; night instrument meteorological conditions
    prevailed. O’Brien has no memory of the crash or any of his
    actions before the crash. He theorizes that ice accumulated on
    the aircraft during flight, resulting in an “ice contaminated tail
    stall” (ICTS) that caused the crash.
    O’Brien sued the aircraft’s designer and manufacturer,
    Cessna Aircraft Company (Cessna), as well as the designer
    and manufacturer of the aircraft’s pneumatic deicing system,
    Goodrich Aerospace Company (Goodrich), asserting claims of
    strict liability, negligence, and fraudulent misrepresentation.
    Cessna and Goodrich denied O’Brien’s claims and alleged the
    accident was the result of O’Brien’s negligent operation and
    misuse of the aircraft.
    The case was tried to a jury over a period of 4 weeks. The
    jury returned a general verdict for the defendants, finding
    O’Brien had not met his burden of proof on any of his claims.
    Rather than detail all of the evidence offered at trial, we sum-
    marize the evidence and set out the general theories advanced
    by the parties.
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    Nebraska Supreme Court A dvance Sheets
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    O’BRIEN v. CESSNA AIRCRAFT CO.
    Cite as 
    298 Neb. 109
    1. Cessna 208B Caravan
    At the time of the crash, O’Brien was flying a Cessna 208B
    Caravan (hereinafter Model 208B) owned and maintained by
    his employer. The Model 208B is a single-engine, turbo-
    prop, high-wing airplane. The Model 208B was certified by
    the Federal Aviation Administration (FAA) for “Flight Into
    Known Icing Conditions.” To obtain this certification, an air-
    craft designer must show that the aircraft can operate safely in
    icing conditions. The Model 208B that O’Brien was flying was
    configured for such conditions and to carry cargo.
    The Model 208B was designed with pneumatic deicing
    “boots,” and the aircraft O’Brien was flying was equipped
    with such boots. This deicing system uses hot “bleed air” from
    the aircraft’s engine to inflate corrugated rubberlike boots
    affixed to multiple parts of the aircraft. As the boots inflate and
    expand, accumulated ice is broken up and shed. The ­deicing
    boots are manually activated by the pilot using a switch in
    the cockpit.
    When Cessna was designing the Caravan models, it consid-
    ered several different ice-protection systems, including TKS.
    TKS is an anti-icing system that extrudes an alcohol/glycol-
    based fluid through a thin mesh to prevent ice from forming.
    Cessna had used a TKS system on a different plane model, but
    chose to use pneumatic deicing boots for the Caravan models,
    including the Model 208B.
    2. O’Brien’s Theory
    O’Brien’s experts testified that his aircraft suffered ICTS
    while flying through light-to-moderate icing conditions.
    Accident scene photographs taken a few hours after the
    crash, supported by testimony at trial, showed ice accumu-
    lation of anywhere from one-tenth to one-fourth of an inch
    of ice on the leading edge of the wings, and approximately
    one-eighth of an inch of ice on the horizontal tail. Witnesses
    testified that the horizontal tail keeps the aircraft balanced in
    flight by creating a downward lift and preventing the nose of
    the aircraft from pitching down. Generally speaking, when
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    enough ice accumulates on the horizontal tail to disrupt the
    downward lift, ICTS can occur and the tail cannot keep the
    aircraft upright.
    O’Brien cited various design defects in the Model 208B
    and its pneumatic deicing system that he claimed caused his
    aircraft to suffer ICTS. Specifically, he claimed the deicing
    system on the Model 208B was defectively designed and
    unreasonably dangerous in that the deicing boots provided
    insufficient coverage and the deicing system lacked a water
    separator to prevent contaminants from entering and affecting
    its operation.
    O’Brien also claimed the crash was caused by the negli-
    gence of Cessna and Goodrich in selecting, designing, and
    testing the deicing system. He claimed, summarized, they were
    negligent in selecting pneumatic deicing boots rather than a
    TKS anti-icing system for the Caravan models, in failing to
    install a water separator for the deicing boots, in failing to
    provide a filter for the bleed air system, in failing to provide
    boots with adequate coverage for the conditions in which
    the aircraft would be flown, in failing to properly test the
    Model 208B for flight in icing conditions, in failing to warn
    operators and owners that the Model 208B was unsuitable for
    operating in icing conditions and suffers ICTS, and in failing
    to provide adequate instructions for operating the aircraft in
    icing conditions.
    O’Brien also claimed Cessna fraudulently misrepresented
    that if the Model 208B was operated in accordance with
    the “Pilots Operating Handbook and FAA Approved Airplane
    Flight Manual,” it was safe to fly in icing conditions, when it
    knew it was not. O’Brien alleged he relied on this false repre-
    sentation, which proximately caused his crash and injuries.
    3. Theory of Cessna and Goodrich
    Cessna and Goodrich claimed there was no credible evidence
    that O’Brien’s aircraft experienced ICTS and suggested the
    crash was caused by O’Brien’s own negligence in descending
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    below the minimum descent altitude before he had the run-
    way environment in sight. Defense experts testified that the
    crash resulted from “controlled flight into terrain” caused by
    O’Brien’s inadvertent descent below the minimum descent alti-
    tude, at night, in a single-pilot environment, due to distraction
    and heavy fog.
    To counter evidence that the aircraft experienced a tail
    stall, the defense offered evidence that O’Brien’s vertical and
    horizontal flight path, although below the minimum descent
    altitude, appeared to be under control and lined up with
    the runway. Additionally, the defense suggested the aircraft’s
    4-degree angle of impact into the metal building and the simi-
    lar angle of the aircraft’s path through the roof of the building
    indicated the aircraft was under O’Brien’s control at the time
    of impact.
    Cessna and Goodrich denied that the crash was caused by
    any malfunction or defect in the pneumatic deicing boots.
    They presented evidence that the weather conditions would not
    have required activation of the deicing boots, and they offered
    circumstantial evidence that O’Brien had not cycled the boots
    before the crash.
    Cessna’s expert testified that the pilots operating handbook
    indicates a pilot should cycle the boots as a matter of course
    immediately before landing and, depending on the type of
    ice, whenever one-fourth to three-fourths of an inch of ice
    has accumulated on the wing’s leading edge. O’Brien has
    no memory of using the deicing boots before the crash, but
    testified it was his usual practice to wait until at least one-
    half of an inch of ice had accumulated on the wing’s leading
    edge before activating the boots. A defense expert performed
    an ice accretion analysis using the weather data supplied by
    O’Brien’s weather expert and determined that approximately
    one-tenth of an inch of ice would have accumulated on the
    wings’ leading edges before the crash. The defense also relied
    on accident scene photographs showing that the protected
    surfaces of the plane had approximately one-tenth of an inch
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    of ice, and roughly the same amount of ice was found on the
    unprotected surfaces, suggesting O’Brien had not cycled the
    boots before impact.
    4. Jury Verdict and A ppeal
    The case was submitted to the jury on O’Brien’s claims
    of negligence and strict liability against both Cessna and
    Goodrich, and on O’Brien’s claim of fraudulent misrepresenta-
    tion against Cessna. The jury deliberated for approximately 8
    hours before returning a general verdict for the defendants. The
    district court accepted the verdict, entered judgment thereon
    for the defendants, and directed O’Brien to pay the costs of
    the action. After an evidentiary hearing on costs, the court
    found O’Brien should be ordered to pay costs in the amount
    of $35,701.68 and entered judgment accordingly. O’Brien
    timely appealed.
    III. ASSIGNMENTS OF ERROR
    O’Brien assigns 65 errors, which we condense into 10.
    O’Brien assigns, renumbered and restated, that the district
    court erred in (1) excluding the testimony of his expert regard-
    ing 32 “substantially similar” plane crashes; (2) failing to
    enforce its discovery order compelling Cessna to produce
    flight test data; (3) excluding as hearsay a copy of a 2006
    Airworthiness Directive affecting the Caravan models; (4)
    excluding exhibits showing Cessna concealed information
    regarding the “Caravan’s susceptibility to ICTS”; (5) excluding
    evidence that after the crash, Cessna changed the design of the
    Caravan models from one which used pneumatic deicing boots
    to one which used an anti-icing system; (6) excluding multiple
    documents Goodrich marked as “confidential”; (7) excluding
    the opinion testimony of O’Brien’s radar reconstruction expert;
    (8) concluding that Nebraska law applied to the issue of puni-
    tive damages rather than Kansas law; (9) refusing to instruct
    the jury using O’Brien’s tendered instruction; and (10) taxing
    excessive costs to O’Brien.
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    IV. ANALYSIS
    1. O’Brien Cannot R ely on M alfunction
    Theory to Infer Unspecified Defect
    In addition to presenting evidence of specific design defects
    in the deicing system of the Model 208B, O’Brien sought
    to present circumstantial evidence that the Model 208B was
    defective because it was “susceptible to ICTS.” Many of
    O’Brien’s assignments of error include the argument that he
    was prevented from showing the Model 208B was “susceptible
    to ICTS” or had a “propensity to suffer ICTS.”1
    Both before the district court and on appeal, Cessna argued
    that O’Brien’s “susceptibility theory” identifies no specific
    defect and “is so vague as to be meaningless.”2 The trial court
    did not instruct the jury on O’Brien’s “susceptibility theory,”
    reasoning in part that it had not been sufficiently pled. Because
    so many of O’Brien’s assigned errors include the argument that
    he should have been permitted to show that the Model 208B
    was “susceptible to ICTS,” we address the viability of this
    theory as a threshold matter.
    [1-4] The central question in any claim based on strict
    liability in tort is whether the product was defective.3 Defects
    usually fall into one of three categories: design defects, manu-
    facturing defects, or warning defects.4 The best means of
    proving a defect is expert testimony pointing to a specific
    defect.5 But in lieu of pleading and proving a specific defect,
    we have—at least in the context of an implied warranty case—
    permitted plaintiffs to prove an unspecified defect in the war-
    ranted product through circumstantial evidence using what is
    1
    E.g., replacement brief for appellant at 26.
    2
    Brief for appellee Cessna at 21.
    3
    See, Roskop Dairy v. GEA Farm Tech., 
    292 Neb. 148
    , 
    871 N.W.2d 776
    (2015); Stahlecker v. Ford Motor Co., 
    266 Neb. 601
    , 
    667 N.W.2d 244
    (2003).
    4
    Roskop Dairy v. GEA Farm Tech., supra note 3.
    5
    Genetti v. Caterpillar, 
    261 Neb. 98
    , 
    621 N.W.2d 529
     (2001).
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    commonly referred to as the “malfunction theory.”6 We have
    described the rationale and application of the malfunction
    theory as follows:
    The malfunction theory is based on the same principle
    underlying res ipsa loquitur, which permits a fact finder to
    infer negligence from the circumstances of the incident,
    without resort to direct evidence of the wrongful act.
    Under the malfunction theory, also sometimes called
    the indeterminate defect theory or general defect theory,
    a plaintiff may prove a product defect circumstantially,
    without proof of a specific defect, when (1) the incident
    causing the harm was of a kind that would ordinarily
    occur only as the result of a product defect and (2) the
    incident was not, in the particular case, solely the result
    of causes other than a product defect existing at the time
    of sale or distribution.7
    This court has addressed the natural limitations of the mal-
    function theory and emphasized it should be applied with
    caution:
    The malfunction theory should be utilized with the
    utmost of caution. Although some circumstances may
    justify the use of the malfunction theory to bridge the
    gap caused by missing evidence, the absence of evidence
    does not make a fact more probable but merely lightens
    the plaintiff’s evidentiary burden despite the fact that
    the missing evidence might well have gone either way,
    and this rationale is too often subject to misapplica-
    tion by courts in situations in which evidence is actu-
    ally available.
    ....
    The malfunction theory is narrow in scope. The mal-
    function theory simply provides that it is not neces-
    sary for the plaintiff to establish a specific defect so
    6
    Roskop Dairy v. GEA Farm Tech., supra note 3.
    7
    Id. at 174, 871 N.W.2d at 796.
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    long as there is evidence of some unspecified dangerous
    condition or malfunction from which a defect can be
    inferred—the malfunction itself is circumstantial evi-
    dence of a defective condition. The malfunction theory
    does not alter the basic elements of the plaintiff’s burden
    of proof and is not a means to prove proximate cause
    or damages.8
    We understand O’Brien’s argument that the Cessna Caravan
    models are “susceptible to ICTS” as an attempt to prove an
    unspecified or general defect in the aircraft through circum-
    stantial evidence. This court has not extended the malfunc-
    tion theory into the context of strict liability product defect
    claims.9 Assuming without deciding the theory can be used
    in a strict liability case, it is unavailable to O’Brien here for
    two reasons: (1) He did not plead such a theory and (2) the
    applicability of such a theory is negated by his assertion of
    specific defects.
    A plaintiff who wishes to rely on the malfunction theory
    to establish an unspecified defect must plead and prove that
    (1) the incident causing the harm was of a kind that would
    ordinarily occur only as the result of a product defect and (2)
    the incident was not, in the particular case, solely the result
    of causes other than a product defect existing at the time of
    sale or distribution.10 O’Brien’s amended complaint included
    no such allegations and, instead, identified a myriad of very
    specific design defects that allegedly caused the aircraft to
    crash. Given the nature of the crash, it is doubtful O’Brien
    could satisfy either factor of the malfunction theory, but his
    failure to plead the malfunction theory at all prevents him from
    relying on it to prove a nonspecific defect that the aircraft was
    “susceptible to ICTS.”
    8
    
    Id. at 174-75
    , 871 N.W.2d at 796-97.
    9
    See Shuck v. CNH America, LLC, 
    498 F.3d 868
     (8th Cir. 2007) (discussing
    Nebraska law on strict liability product defect claims).
    10
    Roskop Dairy v. GEA Farm Tech., supra note 3.
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    More importantly, in a case such as this where the plain-
    tiff pleads specific defects, the malfunction theory is simply
    unavailable. As we observed recently:
    [W]e have found little case law specifically address-
    ing whether the malfunction theory applies when there
    is no loss of evidence or when there is an allegation of
    a specific defect, [but] we find no cases that have done
    so. And we observe that the related doctrine of res ipsa
    loquitur does not apply when specific acts of negligence
    are alleged or there is evidence of the precise cause of
    the accident.11
    [5] We now expressly hold what we previously observed:
    The malfunction theory, which permits a plaintiff to prove a
    product defect circumstantially without proof of any specific
    defect, is not available when specific defects are alleged. A
    plaintiff cannot simultaneously rely on the malfunction theory
    to establish an unspecified defect and, at the same time, point
    to evidence of specific defects.
    As such, to the extent O’Brien has assigned error to various
    trial court rulings excluding evidence related to the general
    theory that the Cessna Caravan models are “susceptible to
    ICTS,” all such assignments are without merit and warrant no
    additional discussion.
    2. Discovery Ruling
    O’Brien assigns that the district court erred in failing to
    enforce a discovery order. His argument relates to two separate
    discovery rulings; O’Brien asserts the first discovery ruling
    was erroneous and the second ruling illustrates how he was
    prejudiced. We summarize both discovery rulings below and
    find no abuse of discretion.
    (a) Standard of Review
    [6,7] Decisions regarding discovery are directed to the dis-
    cretion of the trial court, and will be upheld in the absence of
    11
    
    Id. at 179
    , 871 N.W.2d at 799.
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    an abuse of discretion.12 The party asserting error in a discov-
    ery ruling bears the burden of showing that the ruling was an
    abuse of discretion.13
    (b) Discovery Rulings
    Early in the case, O’Brien asked Cessna to produce all the
    data which was recorded on the flight data recording equipment
    on board aircraft “N208LP,” which number is the FAA regis-
    tration number assigned to one of the prototypes of Cessna’s
    Caravan models. The requested flight test data was stored on
    magnetic tapes onto which Cessna had recorded raw telemetry
    data from Caravan test flights in the 1980’s. The court ordered
    production of the magnetic tapes, and Cessna copied the raw
    data from the magnetic tapes and produced it to O’Brien.
    O’Brien then moved for an order compelling Cessna to con-
    vert the raw flight test data into a different format and moved
    for sanctions. The court overruled O’Brien’s motion, including
    the request for sanctions, but it ordered Cessna to produce a
    compact disc of flight test data that had been converted for use
    by Cessna’s expert. The court also invited O’Brien’s counsel
    to bring the matter back before the court if he believed addi-
    tional converted flight test data existed. And while the court
    did not require Cessna to convert all of the raw flight test data
    into a different format, it did not foreclose the possibility of
    such an order in the future, explaining:
    The Court declines to order Cessna to convert all raw
    flight test data into readable format at this time. Instead,
    Cessna will produce a recently located CD containing
    flight test data. Once [O’Brien has] had an opportunity
    to review the CD, [he] may request a hearing or further
    telephone conference, if needed.
    The record does not show that O’Brien followed up with either
    Cessna or the district court on this issue.
    12
    Moreno v. City of Gering, 
    293 Neb. 320
    , 
    878 N.W.2d 529
     (2016); Breci v.
    St. Paul Mercury Ins. Co., 
    288 Neb. 626
    , 
    849 N.W.2d 523
     (2014).
    13
    
    Id.
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    Later, after the deadline for completing expert discovery
    passed, Cessna moved to exclude the testimony of one of
    O’Brien’s experts on the ground O’Brien had not produced his
    expert for deposition despite repeated requests from Cessna. In
    response, O’Brien claimed his expert was not able to complete
    his work because he had not seen the disputed Cessna flight
    test data. The district court sustained Cessna’s motion to limit
    the expert’s testimony, but advised counsel it would recon-
    sider its decision if O’Brien could show that Cessna’s delay in
    producing the flight test data had, in fact, delayed O’Brien’s
    expert’s work. The record does not show that O’Brien took any
    further action on the issue.
    On appeal, O’Brien assigns that the district court erred by
    failing to enforce its order compelling Cessna to produce flight
    test data. He contends he was “deprived” of converted flight
    test data because the “court failed to enforce its order” compel-
    ling discovery. O’Brien claims he was prejudiced because his
    expert witnesses needed the converted data to, among other
    things, prove “ICTS susceptibility.”
    (c) No Abuse of Discretion
    To put this particular discovery dispute in context, we note
    the trial court heard and ruled upon at least 40 motions regard-
    ing various discovery issues. In regard to the discovery dis-
    pute over converting the raw flight test data, O’Brien argues
    on appeal that the trial court “fail[ed] to assure disclosure”14
    of the data by imposing discovery sanctions. We see nothing
    in the record that suggests the court abused its discretion on
    this issue.
    [8] A judicial abuse of discretion exists when the reasons or
    rulings of a trial judge are clearly untenable, unfairly depriv-
    ing a litigant of a substantial right and denying just results in
    matters submitted for disposition.15 Here, the court initially
    14
    Replacement brief for appellant at 43.
    15
    Hill v. Tevogt, 
    293 Neb. 429
    , 
    879 N.W.2d 369
     (2016).
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    ordered Cessna to produce the raw flight test data, and Cessna
    complied. When O’Brien later asked that Cessna be ordered
    to convert all the flight test data into a different format, the
    court conditionally denied the motion, but ordered Cessna to
    turn over the flight test data that already had been converted
    and invited O’Brien’s counsel to request further hearing on the
    issue once it had an opportunity to review that information.
    O’Brien’s trial counsel took no further action. We cannot con-
    strue counsel’s failure to follow up on the court’s invitation as
    an abuse of discretion by the trial court.
    3. Evidentiary Rulings
    O’Brien assigns error to many of the trial court’s evidentiary
    rulings. We address each in turn, but first we set out the stan-
    dards by which we review such rulings on appeal.
    (a) Standard of Review
    [9] A trial court has the discretion to determine the relevancy
    and admissibility of evidence, and such determinations will
    not be disturbed on appeal unless they constitute an abuse of
    that discretion.16
    [10] Apart from rulings under the residual hearsay excep-
    tion, an appellate court reviews for clear error the factual find-
    ings underpinning a trial court’s hearsay ruling and reviews
    de novo the court’s ultimate determination to admit evidence
    over a hearsay objection or exclude evidence on hearsay
    grounds.17
    [11] In a civil case, the admission or exclusion of evidence
    is not reversible error unless it unfairly prejudiced a substantial
    right of the complaining party.18
    [12] Because authentication rulings are necessarily fact
    specific, a trial court has discretion to determine whether
    16
    Hartley v. Metropolitan Util. Dist., 
    294 Neb. 870
    , 
    885 N.W.2d 675
     (2016).
    17
    Arens v. NEBCO, Inc., 
    291 Neb. 834
    , 
    870 N.W.2d 1
     (2015).
    18
    Hartley v. Metropolitan Util. Dist., 
    supra note 16
    .
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    evidence has been properly authenticated.19 An appellate court
    reviews the trial court’s ruling on authentication for abuse
    of discretion.20
    [13] An abuse of discretion, warranting reversal of a trial
    court’s evidentiary decision on appeal, occurs when a trial
    court’s decision is based upon reasons that are untenable or
    unreasonable or if its action is clearly against justice or con-
    science, reason, and evidence.21
    (b) Evidence of Other Accidents
    Cessna moved in limine to prevent O’Brien’s expert from
    testifying about 32 accidents involving other Model 208B air-
    craft. After a 3-day hearing during which the court received
    testimony and exhibits regarding each of the other accidents,
    the court excluded evidence of the other accidents, finding
    O’Brien had failed to meet his burden of proving substantial
    similarity between the other accidents and O’Brien’s accident.
    O’Brien assigns this as error.
    [14,15] A plaintiff in a strict liability case may rely on
    evidence of other similar accidents involving the product to
    prove defectiveness, but the plaintiff must first establish that
    there is a substantial similarity of conditions between the
    other accidents and the accident that injured the plaintiff.22
    The proponent of the evidence bears the burden to establish
    the similarity between the other accidents and the accident at
    issue before the evidence is admitted.23 The proffered evidence
    must satisfy the substantial similarity test for it to be properly
    admitted into evidence, whether to prove defect, causation,
    or knowledge/notice.24 Substantial similarity is satisfied when
    19
    State v. Oldson, 
    293 Neb. 718
    , 
    884 N.W.2d 10
     (2016).
    20
    
    Id.
    21
    
    Id.
    22
    Shipler v. General Motors Corp., 
    271 Neb. 194
    , 
    710 N.W.2d 807
     (2006).
    23
    
    Id.
    24
    
    Id.
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    “the prior accidents or occurrences happened under substan-
    tially the same circumstances and were caused by the same or
    similar defects and dangers.”25
    Here, the court summarized the circumstances of O’Brien’s
    accident and the specific design defects he alleged and then
    compared it to the evidence adduced regarding the 32 other
    accidents. The court found the other accidents spanned from
    1990 to the present, and while all involved flying in ice, sleet,
    or snow, most did not involve evidence that the pilot had
    activated the deicing boots, as O’Brien alleged to have done.
    Some accidents involved planes that crashed during land-
    ing, while others involved crashes during takeoff. Still others
    involved an aircraft that landed safely or sustained minimal
    damage. After comparing the evidence, the court concluded
    that none of the 32 other accidents were substantially similar
    to O’Brien’s, explaining:
    These accidents occurred under entirely different circum-
    stances; including different points of significance during
    the flights, pilots of different experience levels, differ-
    ent airport geography and topography, different weather
    conditions (some conditions outside of those under which
    the aircraft is actually certified to fly), and under circum-
    stances that required different investigating agencies com-
    ing to different factual and causation conclusions from
    [O’Brien’s] proposed expert opinions on causation.
    O’Brien does not take exception to any of these findings.
    Instead, he suggests the trial court failed to recognize that he
    offered evidence of the other accidents not just to prove the
    specific defects he had alleged, but also as circumstantial evi-
    dence that the aircraft was “susceptible to ICTS.”26 O’Brien
    suggests that despite the dissimilarities noted by the court,
    the prior accidents “are compelling proof” that the Model
    208B is generally “unsafe in icing conditions because of its
    25
    
    Id. at 223
    , 710 N.W.2d at 834.
    26
    Replacement brief for appellant at 27.
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    design,”27 and he argues the other accidents should have been
    admitted for that purpose. We conclude the trial court not only
    recognized O’Brien’s argument in this regard, but correctly
    rejected it.
    As explained earlier, O’Brien alleged his accident was
    caused by several specific design defects and, consequently,
    he cannot simultaneously rely on the malfunction theory in an
    effort to prove the accident was caused by a nonspecific defect
    rendering the aircraft “susceptible to ICTS.” The trial court
    correctly considered the admissibility of the 32 other accidents
    by comparing them to the circumstances surrounding O’Brien’s
    accident and the specific defects he alleged, and focusing on
    whether “the prior accidents or occurrences happened under
    substantially the same circumstances and were caused by the
    same or similar defects and dangers.”28
    On this record, we find no abuse of discretion in the
    court’s decision to exclude evidence of the 32 prior accidents.
    “[W]here an individual fails to adequately demonstrate how
    prior occurrences are substantially similar, evidence of prior
    occurrences is irrelevant and, thus, inadmissible.”29
    (c) FAA Airworthiness Directive
    In 2006, the FAA issued “Airworthiness Directive
    2006-06-06” (AD) affecting all “Cessna Model 208 airplanes
    and Model 208B airplanes” equipped with pneumatic deicing
    boots that were “not currently prohibited from flight in known
    or forecast icing.” The AD required that certain information
    be inserted into the flight manual, inserted into the pilots
    operating handbook, and placed on instrument panel placards
    to inform pilots that the aircraft could dispatch into forecast
    areas of icing, but if pilots encountered “moderate or greater
    icing conditions,” they were prohibited from continued flight
    27
    Id. at 28.
    28
    Shipler v. General Motors Corp., 
    supra note 22
    , 
    271 Neb. at 223
    , 710
    N.W.2d at 834.
    29
    Holden v. Wal-Mart Stores, 
    259 Neb. 78
    , 85, 
    608 N.W.2d 187
    , 193 (2000).
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    and had to immediately exit such conditions. The AD included
    regulatory language explaining how to comply with the FAA’s
    directive and summarized several “accident/incidents” that
    prompted the FAA to issue the AD.
    At trial, there was considerable testimony regarding the
    AD. The jury heard testimony about when and why the AD
    was issued, what it required, how it impacted the certification
    and operation of the Model 208B in moderate icing condi-
    tions, and the actions taken to comply with the AD. But the
    court did not receive a copy of the AD into evidence, finding
    it contained inadmissible hearsay and was more prejudicial
    than probative.
    On appeal, O’Brien asserts it was reversible error to exclude
    the AD as an exhibit. He argues the AD was admissible,
    because it either fell within one of several hearsay exceptions
    or was offered for a nonhearsay purpose. He also argues it was
    an agency ruling subject to judicial notice under 
    Neb. Rev. Stat. § 27-201
     (Reissue 2016). We do not reach the merits of
    these evidentiary arguments, because we conclude even if error
    could be shown, it would not warrant reversal on this record
    because O’Brien cannot show the requisite prejudice.
    [16,17] In a civil case, the admission or exclusion of evi-
    dence is not reversible error unless it unfairly prejudiced a
    substantial right of the complaining party.30 The exclusion
    of evidence is ordinarily not prejudicial where substantially
    similar evidence is admitted without objection.31 In particular,
    where the information contained in an exhibit is, for the most
    part, already in evidence from the testimony of witnesses, the
    exclusion of the exhibit is not prejudicial.32
    Here, the relevant information contained within the AD was
    presented to the jury through witness testimony. O’Brien’s
    30
    Steinhausen v. HomeServices of Neb., 
    289 Neb. 927
    , 
    857 N.W.2d 816
    (2015).
    31
    
    Id.
    32
    
    Id.
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    closing argument focused extensively on that testimony, and
    his briefing articulates no way in which the presentation of
    O’Brien’s case was unfairly constrained by the exclusion of
    the exhibit. Instead, O’Brien suggests that exclusion of the AD
    exhibit was prejudicial, because it was the “only document the
    jury asked to see during deliberations.”33
    During deliberation, the foreperson sent a question to the
    court asking: “Is [the AD] in evidence? If so, we can not [sic]
    locate our copy. Could you provide it to us? (Or is it demon-
    strative?)” Before responding to the jurors’ question, the court
    consulted with counsel. O’Brien’s attorney pointed out that the
    jury “heard all about” the AD and that “witnesses discussed
    it in excruciating detail,” so he took the position that the jury
    either should be provided a copy of the exhibit, even though
    it was not in evidence, or should be instructed that “[y]our
    recollection of its contents should be controlling.” The court
    rejected both suggestions. Instead, the court responded to the
    jury’s question as follows: “The Court received testimony
    about the [AD], but the document itself was not received as
    an exhibit . . . .”
    O’Brien does not assign error to the court’s response, but
    argues that the jury’s interest in reviewing the AD shows he
    was prejudiced by its exclusion. We disagree.
    Thousands of exhibits were marked in this case, and given
    the amount of testimony and argument focused on the AD,
    we find nothing unusual about the jury’s asking whether a
    copy of the AD was in evidence. O’Brien’s statement to the
    trial court that the jury “heard all about” the AD and “wit-
    nesses discussed it in excruciating detail” is supported by the
    record and directly contradicts the position he takes on appeal.
    Moreover, nothing about the jury’s question, or the court’s
    response, supports O’Brien’s argument that excluding a copy
    of the AD unfairly prejudiced a substantial right. This assign-
    ment is without merit.
    33
    Reply brief for appellant at 8.
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    (d) FAA and National Transportation
    Safety Board Documents
    O’Brien assigns error to the exclusion of 12 exhibits related
    to safety investigations conducted by the FAA and the National
    Transportation Safety Board. The FAA exhibits include var-
    ious directives, bulletins, briefing papers, and letters. The
    National Transportation Safety Board’s exhibits include safety
    recommendations, a listing of the board’s “Most Wanted
    Transportation Safety Improvements,” and a PowerPoint pre-
    sentation assessing icing incidents involving the Model 208B.
    In response to a motion in limine, some of those exhibits were
    excluded on hearsay grounds, and others were excluded on
    grounds the exhibit was either irrelevant or more prejudicial
    than probative. At trial, O’Brien made an offer of proof con-
    cerning the excluded exhibits and the court affirmed its pre-
    liminary rulings and excluded the exhibits.
    O’Brien’s briefing combines his argument regarding all 12
    exhibits. With respect to the exhibits excluded as hearsay,
    O’Brien argues they were not being offered for their truth and
    alternatively argues they should have been admitted under
    the residual hearsay exception.34 With respect to the exhibits
    excluded as irrelevant or unfairly prejudicial, O’Brien argues
    the trial court should have required more proof that the unfair
    prejudice outweighed the exhibits’ probative value.
    We find it unnecessary to discuss the merits of O’Brien’s
    evidentiary arguments, because we conclude that even if some
    error could be shown, O’Brien cannot show that the exclusion
    of these exhibits unfairly prejudiced a substantial right.35
    O’Brien claims he offered these exhibits to establish “the
    Caravan’s susceptibility to ICTS” and Cessna’s efforts to con-
    ceal that susceptibility. He argues the exhibits were relevant
    34
    See 
    Neb. Rev. Stat. § 27-804
    (2)(e) (Reissue 2016).
    35
    See Steinhausen v. HomeServices of Neb., supra note 30 (holding that
    exclusion of evidence in civil case was not reversible error unless it
    unfairly prejudiced substantial right of complaining party).
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    to show that “the Caravan suffered unknown design flaws
    making it unsafe to fly” in icing conditions and that “Cessna
    knew the Caravan was susceptible to ICTS and concealed that
    knowledge.”36 But as noted previously, O’Brien’s argument
    that the Model 208B is “susceptible to ICTS” is an attempt to
    prove an unspecified or general defect in the aircraft through
    circumstantial evidence. And O’Brien cannot rely on the mal-
    function theory in this case, because he did not plead it and
    because the malfunction theory is not available where, as
    here, specific defects have been alleged. As such, we conclude
    O’Brien cannot show he was unfairly prejudiced by the exclu-
    sion of exhibits he claims were offered to support a theory on
    which he could not properly rely.
    (e) Postaccident Design Change
    In 2008, Cessna changed the design of its Caravan 208
    series to, among other things, switch from pneumatic deicing
    boots to a TKS anti-icing system. Cessna moved in limine
    to exclude evidence of the postaccident design changes as a
    subsequent remedial measure under 
    Neb. Rev. Stat. § 27-407
    (Reissue 2016). The court sustained Cessna’s motion, but
    indicated it would revisit the admissibility of the design
    change evidence “should conditions arise at trial that were
    not anticipated in the briefing.” O’Brien assigns error to
    this ruling.
    [18,19] A motion in limine is only a procedural step to
    prevent prejudicial evidence from reaching the jury. It is not
    the office of such motion to obtain a final ruling upon the
    ultimate admissibility of the evidence.37 Because overruling a
    motion in limine is not a final ruling on the admissibility of
    evidence and does not present a question for appellate review,
    a question concerning the admissibility of evidence which is
    the subject of a motion in limine must be raised and preserved
    36
    Replacement brief for appellant at 35.
    37
    State v. Schreiner, 
    276 Neb. 393
    , 
    754 N.W.2d 742
     (2008).
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    for appellate review by an appropriate objection or offer of
    proof during trial.38
    O’Brien’s briefing neither mentions nor cites to an offer of
    proof regarding evidence of the Caravan 208 series’ postac-
    cident design change. We note O’Brien made a lengthy offer
    of proof just before resting his case in chief, but that offer
    did not include evidence of the Caravan 208 series’ postac-
    cident design change. Having been cited to nowhere in the
    25-­volume record where O’Brien made an appropriate offer of
    proof regarding the postaccident design change, we conclude
    he failed to preserve this assigned error for appellate review.
    (f) Documents Marked as “Confidential”
    During discovery, Goodrich produced 11 documents, each
    marked “confidential” pursuant to a protective order entered
    at Goodrich’s request. The protective order defined “confi-
    dential information” to mean “bona fide trade secret or other
    confidential, financial, research and development, or other
    information identified in good faith by the supplying party,
    whether it be a tangible thing, a document . . . or information
    revealed in an interrogatory answer or other discovery.” The
    documents at issue include copies of emails, reports, letters,
    handwritten faxes, transcribed voicemail messages, and hand-
    written notes. When O’Brien tried to offer these documents as
    exhibits at trial, Goodrich objected. The trial court sustained
    the objections and excluded the exhibits, finding they had not
    been properly authenticated, lacked necessary foundation, and
    contained inadmissible hearsay.
    On appeal, O’Brien does not separately describe the exhibits
    or explain why, with respect to each exhibit, the court’s evi-
    dentiary rulings were erroneous. Rather, he addresses all 11
    exhibits collectively, so we take the same approach.
    O’Brien primarily argues that the trial court erred in ruling
    the exhibits had not been properly authenticated and contained
    38
    See 
    id.
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    hearsay. Specifically, he contends that because Goodrich pro-
    duced these documents during discovery and marked them
    “confidential,” the documents were (1) thereby authenticated
    under 
    Neb. Rev. Stat. § 27-901
     (Reissue 2016) and (2) excepted
    from the hearsay rule as business records under 
    Neb. Rev. Stat. § 27-803
    (5) (Reissue 2016). The trial court correctly rejected
    both these contentions.
    (i) Lack of Authentication
    [20,21] Authentication or identification of evidence is a
    condition precedent to its admission and is satisfied by evi-
    dence sufficient to prove that the evidence is what the pro-
    ponent claims.39 A court must determine whether there is
    sufficient foundation evidence for the admission of physical
    evidence on a case-by-case basis.40 Because authentication rul-
    ings are necessarily fact specific, a trial court has discretion to
    determine whether evidence has been properly authenticated;
    we review a trial court’s ruling on authentication for abuse
    of discretion.41
    [22] Section 27-901 lists, by way of illustration, 10 means of
    adequately authenticating a document. O’Brien does not claim
    to have relied on any of these means to authenticate the docu-
    ments at issue. Instead, he claims that Goodrich’s act of mark-
    ing the documents “confidential” constituted a “judicial admis-
    sion of authenticity.”42 Additionally, he argues that because the
    documents were produced by Goodrich during discovery, they
    needed no further authentication. We reject both of O’Brien’s
    authenticity arguments.
    [23,24] A judicial admission is a formal act done in the
    course of judicial proceedings which is a substitute for
    39
    State v. Oldson, 
    supra note 19
    .
    40
    
    Id.
    41
    
    Id.
    42
    Replacement brief of appellant at 38.
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    evidence, thereby waiving or dispensing with the production
    of evidence by conceding for the purpose of litigation that the
    proposition of fact alleged by the opponent is true.43 Similar
    to a stipulation, a judicial admission must be unequivocal,
    deliberate, and clear.44 By marking certain documents “confi-
    dential” in connection with producing them during discovery,
    Goodrich indicated nothing more than a good faith belief
    that the document contained “confidential information” as
    defined in the court’s protective order. Goodrich did not
    thereby concede any proposition of fact alleged by O’Brien
    in the litigation. Identifying the documents as “confidential”
    did not amount to a judicial admission of the document’s
    authenticity.
    We also reject the broad proposition that producing a docu-
    ment during discovery alleviates a proponent’s burden to lay
    proper foundation for the admissibility of the evidence at trial.
    Authentication requires more than saying “‘my opponent gave
    me a document.’”45 While not a high hurdle, it is still the bur-
    den of the proponent of the evidence to provide the court with
    sufficient evidence that the document or writing is what it
    purports to be.46 On this record, we find no abuse of discretion
    in excluding the exhibits for lack of authentication.
    (ii) Hearsay Exception for
    Business Records
    [25,26] Hearsay is not admissible except as provided by the
    Nebraska Evidence Rules.47 O’Brien claims the 11 exhibits at
    issue were admissible under the business records exception to
    43
    In re Estate of Radford, 
    297 Neb. 748
    , 
    901 N.W.2d 261
     (2017).
    44
    
    Id.
    45
    See Cordray v. 135-80 Travel Plaza, Inc., 
    356 F. Supp. 2d 1011
    , 1015 n.5
    (D. Neb. 2005).
    46
    State v. Draganescu, 
    276 Neb. 448
    , 
    755 N.W.2d 57
     (2008).
    47
    
    Id.
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    the general exclusion of hearsay evidence.48 The party seeking
    to admit a business record under § 27-803(5)(a) bears the bur-
    den of establishing foundation under a three-part test.49 First,
    the proponent must establish that the activity recorded is of a
    type that regularly occurs in the course of the business’ day-
    to-day activities.50 Second, the proponent must establish that
    the record was made as part of a regular business practice at
    or near the time of the event recorded.51 Third, the proponent
    must authenticate the record by a custodian or other quali-
    fied witness.52
    O’Brien directs us to nowhere in the record where he
    attempted to establish the foundational requirements for show-
    ing that any of the 11 exhibits were business records under
    § 27-803(5). Instead, both before the district court and on
    appeal, O’Brien argued that because the documents were
    marked “confidential” by Goodrich and produced during dis-
    covery, they must, ipso facto, be treated as Goodrich’s busi-
    ness records.
    The trial court rejected O’Brien’s blanket proposition that
    anytime a business produces a document marked “confidential”
    pursuant to a protective order, the document must be allowed
    to come into evidence as a business record under § 27-803(5).
    We reject it too.
    It was O’Brien’s burden, as the party seeking to admit a
    business record under § 27-803(5)(a), to establish the foun-
    dational requirements for such admission.53 He failed to meet
    48
    § 27-803(5). See Arens v. NEBCO, Inc., supra note 17.
    49
    State v. Robinson, 
    272 Neb. 582
    , 
    724 N.W.2d 35
     (2006), abrogated on
    other grounds, State v. Thorpe, 
    280 Neb. 11
    , 
    783 N.W.2d 749
     (2010). See,
    also, Misle v. Misle, 
    247 Neb. 592
    , 
    529 N.W.2d 54
     (1995); State v. Wright,
    
    231 Neb. 410
    , 
    436 N.W.2d 205
     (1989).
    50
    
    Id.
    51
    
    Id.
    52
    
    Id.
    53
    See 
    id.
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    that burden, and we find no abuse of discretion in excluding
    these exhibits as hearsay.
    (g) Radar Reconstruction Expert
    Before trial, Cessna moved in limine to prohibit O’Brien’s
    radar reconstruction expert from testifying regarding his per-
    formance analysis of the accident flight. After an evidentiary
    hearing, the trial court sustained the motion in limine, finding
    that O’Brien did not meet his burden to show that the meth-
    odology employed by the expert was scientifically reliable
    under Daubert v. Merrell Dow Pharmaceuticals, Inc.54 and
    Schafersman v. Agland Coop.55
    Two months later, O’Brien moved for reconsideration of the
    ruling in limine and asked to supplement the record. The court
    declined to revisit its preliminary ruling before trial, explain-
    ing that O’Brien had been given an opportunity to supplement
    his evidence before the court’s original ruling in limine and
    was content at the time to rest on the evidence and argu-
    ment submitted.
    On appeal, O’Brien argues it was error for the trial court
    to exclude the opinion testimony of his radar reconstruction
    expert. Cessna argues this issue was not preserved for appel-
    late review, because O’Brien failed to make an offer of proof at
    trial regarding the expert’s testimony. The record bears this out.
    [27] In order to predicate error upon a ruling of the court
    refusing to permit a witness to testify, or to answer a specific
    question, the record must show an offer to prove the facts
    sought to be elicited.56 O’Brien does not argue that he made
    an appropriate offer of proof at trial regarding the opinions he
    wanted to elicit from his radar reconstruction expert. Rather,
    54
    Daubert v. Merrell Dow Pharmaceuticals, Inc., 
    509 U.S. 579
    , 
    113 S. Ct. 2786
    , 
    125 L. Ed. 2d 469
     (1993).
    55
    Schafersman v. Agland Coop, 
    262 Neb. 215
    , 
    631 N.W.2d 862
     (2001).
    56
    State v. Schreiner, 
    supra note 37
    .
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    he suggests the issue was adequately preserved by the district
    court’s ruling in limine. O’Brien is incorrect.
    As stated previously, the ruling on a motion in limine is
    not a final ruling on the admissibility of evidence; the admis-
    sibility of evidence which has been the subject of a motion in
    limine must be raised and preserved for appellate review by an
    appropriate objection or offer of proof during trial.57 Because
    he failed to make an offer of proof at trial regarding the antici-
    pated testimony of the radar reconstruction expert, O’Brien
    failed to preserve this assigned error for our review.
    4. Choice of Law R egarding
    Punitive Damages
    O’Brien’s amended complaint sought to recover punitive
    damages and alleged that the law of Kansas, rather than
    Nebraska, applied to that issue. Cessna and Goodrich moved
    for partial summary judgment on the choice-of-law issue. After
    an evidentiary hearing, the district court conducted a choice-of-
    law analysis and concluded that as a matter of law, Nebraska
    law applied to the issue of punitive damages. O’Brien assigns
    this as error.
    (a) Standard of Review
    [28-30] We will affirm a lower court’s grant of summary
    judgment if the pleadings and admitted evidence show that
    there is no genuine issue as to any material facts or as to the
    ultimate inferences that may be drawn from those facts and that
    the moving party is entitled to judgment as a matter of law.58
    When there are no factual disputes regarding state contacts,
    conflict-of-law issues present questions of law.59 When review-
    ing questions of law, an appellate court has an obligation to
    57
    
    Id.
    58
    White v. Busboom, 
    297 Neb. 717
    , 
    901 N.W.2d 294
     (2017).
    59
    Erickson v. U-Haul Internat., 
    278 Neb. 18
    , 
    767 N.W.2d 765
     (2009);
    Heinze v. Heinze, 
    274 Neb. 595
    , 
    742 N.W.2d 465
     (2007).
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    resolve the questions independently of the conclusion reached
    by the trial court.60
    (b) Nebraska Law Applies to
    Issue of Punitive Damages
    [31,32] In answering any choice-of-law question, a court
    first asks whether there is any real conflict between the laws
    of the states.61 An actual conflict exists when a legal issue is
    resolved differently under the law of two states.62 The district
    court found that a conflict existed between Nebraska and
    Kansas law on the issue of punitive damages. We agree.
    [33] Under Nebraska law, “punitive, vindictive, or exem-
    plary damages contravene Neb. Const. art. VII, § 5, and thus
    are not allowed in this jurisdiction.”63 In contrast, Kansas law
    allows punitive damages to be awarded for “‘malicious, vindic-
    tive, or willful and wanton invasion of another’s rights, with
    the ultimate purpose being to restrain and deter others from the
    commission of similar wrongs.’”64
    [34,35] Once a court determines there is a conflict of law
    between two states, the next step is to classify the nature of
    the specific conflict issue, “‘because different choice-of-law
    rules apply depending on whether the cause of action sounds
    in contract or in tort.’”65 This case involves tort liability, and
    60
    See id.
    61
    In re Estate of Greb, 
    288 Neb. 362
    , 
    848 N.W.2d 611
     (2014).
    62
    See 
    id.
    63
    Distinctive Printing & Packaging Co. v. Cox, 
    232 Neb. 846
    , 857, 
    443 N.W.2d 566
    , 574 (1989), citing Miller v. Kingsley, 
    194 Neb. 123
    , 
    230 N.W.2d 472
     (1975).
    64
    Adamson v. Bicknell, 
    295 Kan. 879
    , 888, 
    287 P.3d 274
    , 280 (2012),
    quoting Cerretti v. Flint Hills Rural Electric Co-op Ass’n, 
    251 Kan. 347
    ,
    
    837 P.2d 330
     (1992).
    65
    Johnson v. United States Fidelity & Guar. Co., 
    269 Neb. 731
    , 737, 
    696 N.W.2d 431
    , 437 (2005) (emphasis omitted), quoting Buchanan v. Doe,
    
    246 Va. 67
    , 
    431 S.E.2d 289
     (1993).
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    to resolve conflicts of law involving tort liability, this court
    consistently has applied the Restatement (Second) of Conflict
    of Laws § 146,66 which sets out the general rule that “[i]n an
    action for a personal injury, the local law of the state where
    the injury occurred determines the rights and liabilities of the
    parties, unless, with respect to the particular issue, some other
    state has a more significant relationship . . . .”
    Section 145 of the Restatement (Second) of Conflict of
    Laws sets out the “most significant relationship” test and
    provides that in addition to principles articulated elsewhere in
    the Restatement,67 the court should take into account the fol-
    lowing contacts:
    (a) the place where the injury occurred,
    (b) the place where the conduct causing the injury
    occurred,
    (c) the domicil, residence, nationality, place of incorpo-
    ration and place of business of the parties, and
    (d) the place where the relationship, if any, between the
    parties is centered.68
    The Restatement cautions, however, that these contacts are
    not to be given equal weight mechanically, but should each be
    considered in light of their relative importance with respect to
    the particular issue under consideration.69
    Additionally, because the issue under consideration
    here involves punitive damages, we note that § 171 of the
    Restatement (Second) of Conflict of Laws deals specifically
    with damages. Comment d. of § 171 addresses exemplary
    or punitive damages and directs that “[t]he law selected by
    66
    Restatement (Second) of Conflict of Laws § 146 (1971). See, Yoder v.
    Cotton, 
    276 Neb. 954
    , 
    758 N.W.2d 630
     (2008); Heinze v. Heinze, 
    supra note 59
    ; Malena v. Marriott International, 
    264 Neb. 759
    , 
    651 N.W.2d 850
    (2002).
    67
    See Restatement, supra note 66, § 6.
    68
    Id., § 145(2).
    69
    Id.
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    application of the rule of § 145 determines the right to exem-
    plary damages.”70
    As such, under the general rule set forth in § 146 of the
    Restatement (Second) of Conflict of Laws, Nebraska law will
    apply to the issue of punitive damages in this case, unless
    Kansas has a more significant relationship considering the fac-
    tors in § 145.
    Here, the district court began its analysis by noting the
    parties did not dispute the basic facts about the parties’ con-
    tacts with Nebraska and Kansas. O’Brien was a Nebraska
    resident, employed by a Nebraska company flying mail in
    Nebraska, and he was injured and treated for his injuries in
    Nebraska. Cessna was headquartered in Kansas, made several
    design decisions regarding the Caravan models in Kansas,
    and conducted test flights from Kansas. Goodrich was a
    New York corporation with its principal place of business in
    North Carolina.
    The district court then analyzed the pertinent sections of the
    Restatement (Second) of Conflict of Laws, discussed several
    state and federal cases applying those factors, and considered
    the undisputed evidence regarding the parties’ contacts under
    the factors in § 145. It ultimately concluded:
    This case has numerous, strong contacts to Nebraska
    that inform Nebraska’s interest in applying its laws to
    the issue of punitive damages. The injury took place in
    Nebraska; Plaintiffs are Nebraska residents; . . . O’Brien
    was flying a regular route within Nebraska at the time
    of the accident; Suburban Air Freight, the owner of the
    aircraft and employer of . . . O’Brien, is a Nebraska resi-
    dent; . . . O’Brien was treated in Nebraska; the Cessna
    aircraft product at issue was operated at all relevant
    times within the borders of Nebraska and the alleged
    product failures took place in this state. . . . Although
    important decisions and product manufacture took place
    70
    Id., § 171, comment d. at 512.
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    at the Cessna headquarters in Kansas, the overall weight
    of the contacts in this case point toward Nebraska hav-
    ing the most significant relationship with this issue. .
    . . Given the Cessna aircraft’s consistent operation on
    a Nebraska air route by Nebraska pilots and owners, it
    is Nebraska that has the most interest in the application
    of laws to this accident. As Nebraska also has a strong
    constitutional policy against punitive damages, Nebraska
    law should be applied to punitive damage claims . . . in
    this case.
    In O’Brien’s briefing, he points to nothing in the district
    court’s analysis of the Restatement factors that he claims was
    incorrect or incomplete. He offers no rationale for apply-
    ing Kansas law on punitive damages other than to state that
    “Kansas law should apply because Cessna is based there and
    its culpable conduct occurred in Kansas.”71 His briefing does
    not address any of the other Restatement factors. And except
    for the issue of punitive damages, O’Brien has not argued that
    Kansas law properly governs any other issue of liability or
    damages in this tort litigation.
    After reviewing the record in light of the applicable
    Restatement factors, we agree with the district court that the
    factors predominate in favor of applying Nebraska law to the
    issue of punitive damages in this case. The trial court did not
    err in granting summary judgment on this issue of law.
    5. Jury Instructions
    O’Brien assigns error to the jury instructions given in this
    case. He argues that when instructing the jury on his negli-
    gence and strict liability claims, the district court should have
    used the “statement of the case” instruction O’Brien tendered.72
    We find no error in the district court’s refusal of O’Brien’s
    proposed instruction.
    71
    Replacement brief for appellant at 44.
    72
    Id. at 25.
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    (a) Standard of Review
    [36] Whether the jury instructions given by a trial court are
    correct is a question of law. When reviewing questions of law,
    an appellate court has an obligation to resolve the questions
    independently of the conclusion reached by the trial court.73
    (b) No Error in Refusing
    O’Brien’s Instruction
    [37,38] To establish reversible error from a court’s failure
    to give a requested instruction, an appellant has the burden to
    show that (1) the tendered instruction is a correct statement
    of the law, (2) the tendered instruction is warranted by the
    evidence, and (3) the appellant was prejudiced by the court’s
    failure to give the tendered instruction.74 Jury instructions do
    not constitute prejudicial error if, taken as a whole, they cor-
    rectly state the law, are not misleading, and adequately cover
    the issues supported by the pleadings and evidence.75
    On appeal, O’Brien does not argue that the court’s jury
    instructions incorrectly stated the applicable law. Rather, he
    complains that the court’s burden-of-proof instructions were
    incomplete, because they did not include each of the specific
    acts of negligence, or each of the particular design defects,
    that he described in his pleadings and repeated in his ten-
    dered instruction.
    At the jury instruction conference, the trial court expressed
    concern with the length, complexity, and redundancy of
    O’Brien’s proposed instructions. We note O’Brien’s proposed
    statement of the case was 15 pages long; his burden-of-proof
    section listed 27 ways in which the defendants were negligent
    and 18 ways in which the Model 208B and its component parts
    were defectively designed. The district court refused to give
    O’Brien’s tendered instructions and instead drafted its own,
    73
    Armstrong v. Clarkson College, 
    297 Neb. 595
    , 
    901 N.W.2d 1
     (2017).
    74
    Tapp v. Blackmore Ranch, 
    254 Neb. 40
    , 
    575 N.W.2d 341
     (1998).
    75
    Golnick v. Callender, 
    290 Neb. 395
    , 
    860 N.W.2d 180
     (2015).
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    explaining that its goal was to eliminate the redundancy and
    simplify the issues for the jury, while still allowing the parties
    to argue all of the claims and defenses that were properly sup-
    ported by the pleadings and the evidence.
    It is unnecessary to individually address each of the spe-
    cific factual grounds that O’Brien claims the court erroneously
    omitted from the jury instructions. The essence of his argu-
    ment on appeal is that his specific allegations of negligence
    and design defect should have been submitted to the jury in
    haec verba and that the court’s summarization was unfair. We
    disagree with both contentions.
    [39,40] A trial court is not required to submit repetitious
    allegations of the same act of negligence.76 This court has
    consistently condemned the practice of instructing the jury
    in haec verba and, instead, has placed the duty squarely upon
    the trial court to properly analyze, summarize, and submit
    the substance of the numerous allegations of negligence
    in tort petitions.77 That is precisely what the district court
    did here.
    Having examined the entire record, we conclude the district
    court’s jury instructions properly analyzed and fairly summa-
    rized O’Brien’s various theories in accordance with Nebraska
    law, and did so in a manner which minimized redundancy and
    still allowed the parties to argue all the theories that were sup-
    ported by the pleadings and the evidence.
    In sum, we reject O’Brien’s argument that his tendered
    instructions should have been used and we conclude that the
    district court’s instructions correctly stated the law, were not
    misleading, and adequately covered the issues to be submitted
    to the jury.
    76
    See, Davis v. Roosman, 
    179 Neb. 808
    , 
    140 N.W.2d 639
     (1966); Kroeger v.
    Safranek, 
    165 Neb. 636
    , 
    87 N.W.2d 221
     (1957).
    77
    See, Foltz v. Northwestern Bell Tel. Co., 
    221 Neb. 201
    , 
    376 N.W.2d 301
    (1985); Greenberg v. Bishop Clarkson Memorial Hosp., 
    201 Neb. 215
    , 
    266 N.W.2d 902
     (1978); Marquardt v. Nehawka Farmers Coop. Co., 
    186 Neb. 494
    , 
    184 N.W.2d 617
     (1971).
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    6. Taxation of Costs
    After the jury returned its verdict for the defendants, the
    court accepted the verdict and entered judgment thereon,
    directing O’Brien to “pay costs of [the] action.” Six days
    later, Cessna moved for an award of costs in the sum of
    $124,424.39.
    O’Brien argued Cessna’s motion for costs was untimely,
    because it was filed 6 days after the court accepted the jury’s
    verdict and entered judgment thereon. The district court dis-
    agreed and found Cessna’s motion was timely. It noted that
    its earlier judgment ordered O’Brien to pay costs but did not
    specify an amount, and it construed Cessna’s motion alterna-
    tively either as a motion to calculate those costs or as a motion
    to alter or amend the judgment to include a specific award
    of costs.78
    After an evidentiary hearing and briefing, the court entered
    an order awarding Cessna some of its deposition costs and
    subpoena fees in the total amount of $35,701.68. The court’s
    order recited the applicable law and included an itemized list
    of the deposition costs found to be recoverable.
    On appeal, O’Brien assigns error to the court’s award of
    costs. His primary argument is that the motion for costs was
    untimely, but he also suggests it was error to tax costs asso-
    ciated with certain depositions. We address both arguments
    below, and we find neither has merit.
    (a) Standard of Review
    [41] The decision of a trial court regarding taxing of
    costs is reviewed for an abuse of discretion.79 An abuse of
    discretion occurs when the trial judge’s reasons or rul-
    ings are clearly untenable, unfairly depriving a litigant of a
    78
    See 
    Neb. Rev. Stat. § 25-1329
     (Reissue 2016).
    79
    Mock v. Neumeister, 
    296 Neb. 376
    , 
    892 N.W.2d 569
     (2017); City of
    Falls City v. Nebraska Mun. Power Pool, 
    281 Neb. 230
    , 
    795 N.W.2d 256
    (2011).
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    substantial right and denying just results in matters submitted
    for disposition.80
    (b) No Error in Awarding Costs
    [42,43] We have long held that the costs of litigation and
    expenses incident to litigation may not be recovered unless
    provided by statute or a uniform course of procedure.81 In
    this case, the court awarded costs pursuant to 
    Neb. Rev. Stat. § 25-1710
     (Reissue 2016).82 Under that statute, a successful
    defendant in a tort action is ordinarily entitled to an award of
    costs as a matter of course “upon a judgment in his favor.”83
    (i) Motion for Costs Was Timely
    O’Brien argues Cessna’s motion for costs was untimely
    under this court’s holding in Salkin v. Jacobsen.84 In Salkin, we
    held that the defendant, who was seeking an award of attorney
    fees on the ground the plaintiff’s action had been dismissed
    as frivolous,85 had not timely filed his motion before the entry
    of judgment. We reasoned that attorney fees, where recover-
    able, are treated as an element of court costs, and we further
    reasoned that an award of costs in a judgment is considered
    part of the judgment. We then held that one seeking an award
    of attorney fees from the trial court pursuant to § 25-824 must
    make such a request before judgment is entered.
    Salkin did not address the timeliness of a motion for costs
    under § 25-1710. Nor does the language of § 25-1710 address
    when any such motion must be filed, directing instead that
    “[c]osts shall be allowed of course to any defendant upon
    80
    Holden v. Wal-Mart Stores, 
    supra note 29
    .
    81
    See City of Falls City v. Nebraska Mun. Power Pool, supra note 79.
    82
    See Bunnell v. Burlington Northern RR. Co., 
    247 Neb. 743
    , 
    530 N.W.2d 230
     (1995).
    83
    See Rehn v. Bingaman, 
    152 Neb. 171
    , 173, 
    40 N.W.2d 673
    , 675 (1950),
    citing § 25-1710.
    84
    Salkin v. Jacobsen, 
    263 Neb. 521
    , 
    641 N.W.2d 356
     (2002).
    85
    See 
    Neb. Rev. Stat. § 25-824
     (Reissue 2016).
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    a judgment in his favor in the actions mentioned in sec-
    tion 25-1708.” A similar statute provides that costs “shall be
    allowed of course” to prevailing plaintiffs.86
    As a practical matter, it is unlikely that a plaintiff or
    defendant will file a motion seeking costs in the trial court
    before judgment is entered in their favor. And while we do
    not endorse the practice, we note it is not uncommon for trial
    courts, when entering judgment on a jury verdict, to award
    unspecified “costs” to the prevailing party without identifying
    or calculating the amount.
    Here, the district court’s judgment expressly directed
    O’Brien to pay costs of the action, but did not specify the
    amount of such costs. O’Brien’s argument that the motion
    for costs was untimely is premised on the conclusion that the
    judgment awarding unspecified costs was final and appeal-
    able. We express no opinion on whether a purported judgment
    that includes an award of unspecified costs can be considered
    a judgment under 
    Neb. Rev. Stat. § 25-1301
     (Reissue 2016),
    but on this record, we find no abuse of discretion in the dis-
    trict court’s conclusion that Cessna’s motion for specific costs
    was timely.
    Like the district court, we construe Cessna’s subsequent
    motion for costs either as a motion seeking to modify the
    award of unspecified costs previously awarded or as a motion
    to alter or amend the judgment purporting to award unspecified
    costs. Whether construed as a motion to modify under 
    Neb. Rev. Stat. § 25-2001
     (Reissue 2016) or a as a motion to alter
    or amend under § 25-1329, we conclude that Cessna’s motion,
    filed 6 days after the court entered a judgment that included
    unspecified costs, was timely filed.
    (ii) No Abuse of Discretion in
    Awarding Deposition Costs
    [44,45] O’Brien’s briefing challenges only that portion of
    the court’s award pertaining to deposition costs. It is well
    86
    
    Neb. Rev. Stat. § 25-1708
     (Reissue 2016).
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    298 Neb. 109
    established that deposition costs are properly taxable and
    recoverable under § 25-1710.87 Moreover, we have explained
    that “‘“unless it appears that the depositions were not taken in
    good faith or were actually unnecessary, costs of taking them
    are properly taxable,”’” even if the depositions were not used
    at trial.88 The questions of good faith and reasonable necessity
    are for the trial court to determine, bearing in mind that a depo-
    sition may appear necessary when taken, but “‘“afterward the
    case may take such a course as to make it unnecessary to use
    the deposition.”’”89
    Here, the district court determined that Cessna should
    recover the reasonable costs to prepare the original tran-
    scripts of the depositions along with the court reporter appear-
    ance fees, but did not allow recovery of the costs associated
    with videotaping and editing the depositions. The court also
    declined to award deposition costs when the invoices were not
    sufficiently detailed, and in several instances, it prorated costs
    for depositions that took longer than the court’s protective
    orders permitted.
    On this record, we find the district court provided a rea-
    soned and logical explanation for the manner in which it taxed
    costs under § 25-1710. It did not abuse its discretion, and
    O’Brien’s assignment to the contrary is without merit.
    V. CONCLUSION
    For the reasons set forth herein, we find no merit to any of
    O’Brien’s assigned errors and affirm the judgment of the dis-
    trict court.
    A ffirmed.
    Wright, J., not participating.
    87
    Bunnell v. Burlington Northern RR. Co., supra note 82.
    88
    Stocker v. Wells, 
    155 Neb. 472
    , 478, 
    52 N.W.2d 284
    , 287 (1952).
    89
    
    Id.