# Tavantzis v. American Airlines, Inc.

> District Court, N.D. California · May 7, 2025

URL: https://www.frixlaw.com/law-library/cases/11033807

## Case

- **Court:** District Court, N.D. California
- **Decided:** May 7, 2025
- **Opinion:** 100trialcourt
- **Cited by:** 0 later opinions in the Frix Law Library

## Citator (automated)

- No negative treatment found by the automated citator. That is not the same as a confirmation that the case is good law; read the citing cases.
- Full citator and citing cases: https://www.frixlaw.com/law-library/cases/11033807

## How later opinions describe it (automated extraction)

- noting that Fed. R. Evid. 702 and 703 grant expert 23 witnesses testimonial latitude unavailable to other witnesses on the “assumption that the expert’s 24 opinion will have a reliable basis in the knowledge and experience of his discipline”

## Opinion text

1
2
3
4 UNITED STATES DISTRICT COURT
5 NORTHERN DISTRICT OF CALIFORNIA
6
7 ANA MARIA MARCELA TAVANTZIS, Case No. 23-cv-05607-NW
et al.,
8
Plaintiffs, ORDER GRANTING AMERICAN’S
9 PARTIAL JUDGMENT ON THE
v. PLEADINGS AND GRANTING IN
10 PART AND DENYING IN PART
AMERICAN AIRLINES, INC., AMERICAN’S DAUBERT MOTION
11
Defendant. Re: ECF Nos. 112, 119
12
13 Plaintiffs Ana Maria Marcela Tavantzis and her husband, Jesus Plasencia, (“Plaintiffs”)
14 initiated this action on October 21, 2023, filed a First Amended Complaint (“FAC”) on December
15 19, 2023, and filed the operative Second Amended Complaint (“SAC”) on August 19, 2024. See
16 ECF Nos. 1, 24, 85. On December 11, 2024, Defendant American Airlines, Inc. (“American”)
17 filed a motion for judgment on the pleadings as to Claim III of the SAC. MJP Mot., ECF.
18 No. 112. On January 9, 2025, American filed a Daubert motion to exclude the expert opinions of
19 Plaintiffs’ expert, Ret. Captain Richard J. Levy. Daubert Mot., ECF No. 119. The Court took the
20 motions under submission without oral argument. N.D. Cal. Civ. L.R. 7-1(b). For the reasons
21 stated below, the Court GRANTS American’s motion for judgment on the pleadings and
22 GRANTS IN PART AND DENIES IN PART American’s motion to exclude Plaintiffs’ expert
23 testimony.
24 I. BACKGROUND
25 The Court previously summarized Plaintiffs’ allegations in its prior order partially granting
26 American’s motion to dismiss the first amended complaint. See ECF No. 77, Tavantzis v. Am.
27 Airlines, Inc., No. 23-CV-05607-BLF, 2024 WL 5446322 (N.D. Cal. July 19, 2024) (“Tavantzis
1 only references the facts from Plaintiffs’ SAC that are pertinent to the Court’s analysis in this
2 Order.
3 A. Facts
4 On November 8, 2021, Plaintiffs travelled from San Francisco, California to Madrid, Spain
5 via a layover in Miami, Florida. SAC ¶¶ 2-3. After Plaintiffs boarded AA Flight 68, and while
6 other passengers were in the process of boarding, Plasencia experienced a sudden inability to pick
7 up his phone and began speaking gibberish. Id. ¶ 38. Tavantzis called for help and indicated that
8 she believed her husband was having a stroke. Id. ¶ 39-40. A flight attendant arrived to assess the
9 situation and subsequently alerted other American employees aboard the aircraft, including the
10 pilot, of Tavantzis’ concerns. Id. ¶¶ 40-41. The pilot spoke to Plaintiffs before taking off, but by
11 that point Plasencia had regained his ability to speak. Id. ¶ 41-42. After talking with Plaintiffs,
12 the pilot cleared them to fly. Id. ¶¶ 45-46. Neither the pilot nor any other American employee
13 contacted the airline medical response team nor sought medical assistance from passengers with
14 medical training. Id. ¶¶ 53-61. Plaintiffs were aboard the plane when it took off for Madrid. Id. ¶
15 62.
16 While in flight, Plasencia suffered a left middle cerebral artery occlusion caused by
17 a thrombus or clot, commonly referred to as a left-MCA stroke. Id. ¶ 63. After the pilot was
18 informed of the medical emergency, the pilot used the overhead announcement system to request
19 the assistance of any trained medical professionals onboard the flight. Id. ¶ 65. Physicians and
20 medical personnel rendered aid to Plasencia. Id. ¶ 66. The pilot continued to fly to Madrid as
21 scheduled. Id. ¶ 68. After landing in Madrid, Plasencia was transported to a hospital in Madrid
22 and then moved to a second hospital, where he remained for 23 days before returning to the United
23 States to seek further treatment. Id. ¶¶ 69-72.
24 B. Procedural Posture
25 Plaintiffs’ FAC brought three claims: (1) liability under the Convention for International
26 Carriage by Air, S. Treaty Doc. No. 106-45 (May 28, 1999) (“Montreal Convention”); (2) loss of
27 consortium under the Montreal Convention; and (3) breach of contract under Texas law.
1 the breach of contract claim with leave to amend because, as alleged, the claim fell “within the
2 substantive scope of the Montreal Convention and [was] thus preempted.” Tavantzis I at *10.
3 The SAC realleges the two surviving Montreal Convention claims and attempts to replead a
4 breach of contract claim. ECF No. 85. American moves this Court for judgment on the pleadings
5 as to the new breach of contract claim (Claim III) and asks the court to dismiss the claim with
6 prejudice. ECF No. 112.
7 C. Expert Discovery
8 Plaintiffs timely noticed Capt. Levy as an Aviation Expert and served his report. Daubert
9 Mot. at 3. Levy’s report advances three opinions related to three critical periods before and during
10 the flight at issue: (1) just before takeoff when the pilot spoke with Plaintiffs; (2) when Plasencia
11 presented stroke symptoms an hour and a half into the flight; and (3) when the pilot landed in
12 Madrid. Levy’s Aviation Expert Report, Ex. D to American’s Daubert Motion, ECF No. 119-4
13 (“Report”).
14 II. LEGAL STANDARD
15 A. Motion for Judgment on the Pleadings
16 Federal Rule of Civil Procedure 12(c) permits a party to move for judgment on the
17 pleadings after the pleadings close but “early enough not to delay trial.” A motion for judgment
18 on the pleadings is “functionally identical” to a motion to dismiss for failure to state a claim. See
19 Dworkin v. Hustler Mag., Inc., 867 F.2d 1188, 1192 (9th Cir. 1989). Judgment on the pleadings is
20 properly granted “when, accepting all factual allegations in the complaint as true, there is no issue
21 of material fact in dispute, and the moving party is entitled to judgment as a matter of
22 law.” Chavez v. United States, 683 F.3d 1102, 1108 (9th Cir. 2012) (citation and original
23 alteration omitted); Fleming v. Pickard, 581 F.3d 922, 925 (9th Cir. 2009).
24 B. Daubert Motion to Exclude Testimony
25 Under Rule 702 of the Federal Rules of Evidence, a witness may offer expert testimony if
26 the following requirements are met:
27 (a) the expert’s scientific, technical, or other specialized knowledge
(b) the testimony is based on sufficient facts or data;
1
(c) the testimony is the product of reliable principles and methods;
2 and
(d) the expert’s opinion reflects a reliable application of the principles
3 and methods to the facts of the case.
4 Expert testimony is admissible under Rule 702 if the court finds by a preponderance of the
5 evidence that the expert is qualified and the testimony is both relevant and reliable. See Daubert
6 v. Merrell Dow Pharms., Inc., 509 U.S. 579, 597 (1993); Hangarter v. Provident Life & Acc. Ins.
7 Co., 373 F.3d 998, 1015 (9th Cir. 2004). Rule 702 “contemplates a broad conception of expert
8 qualifications.” Hangarter, 373 F.3d at 1015. “Expert opinion testimony is relevant if the
9 knowledge underlying it has a valid connection to the pertinent inquiry. And it is reliable if the
10 knowledge underlying it has a reliable basis in the knowledge and experience of the relevant
11 discipline.” Alaska Rent-A-Car, Inc. v. Avis Budget Grp., Inc., 738 F.3d 960, 969 (9th Cir.
12 2013) (quoting Primiano v. Cook, 598 F.3d 558, 565 (9th Cir. 2010), as amended (Apr. 27,
13 2010)). “An expert’s specialized knowledge and experience can serve as the requisite ‘facts or
14 data’ on which they render an opinion.” Elosu v. Middlefork Ranch Inc., 26 F.4th 1017, 1024 (9th
15 Cir. 2022).
16 To testify as an expert, a witness must first establish their qualifications by reference to
17 “knowledge, skill, experience, training, or education.” Fed. R. Evid. 702; United States v. Savanh,
18 727 F. App’x 931, 935 (9th Cir. 2018) (finding a witness failed to qualify as an expert due to
19 “‘extremely minimal’ relevant experience, education, and training”). As the gatekeeper, the
20 district court is responsible for making a preliminary finding that the expert is qualified in the area
21 in which he seeks to offer testimony. Fed. R. Evid. 104(a); see also Kumho Tire Co. v.
22 Carmichael, 526 U.S. 137, 148 (1999) (noting that Fed. R. Evid. 702 and 703 grant expert
23 witnesses testimonial latitude unavailable to other witnesses on the “assumption that the expert’s
24 opinion will have a reliable basis in the knowledge and experience of his discipline”). Once
25 qualified in a specific area, the expert’s opinion must fall within their area of expertise. White v.
26 Ford Motor Co., 312 F.3d 998, 1008 (9th Cir. 2002), opinion amended on denial of reh’g, 335
27 F.3d 833 (9th Cir. 2003).
1 III. DISCUSSION
2 A. Breach of Contract Claims
3 As it did with the FAC, the Court finds that Plaintiffs’ breach of contract claim is
4 preempted by the Montreal Convention and must be dismissed. The Montreal Convention
5 “preempts not only state-law claims that could be asserted under the Convention, but all causes of
6 action for damage to persons or cargo suffered during international air transportation.”1 Wysotski
7 v. Air Canada, No. C 02-04952 CRB, 2006 WL 581093, at *3 (N.D. Cal. Mar. 6, 2006). “In other
8 words, the Convention is the exclusive source of any remedy that can be obtained in connection
9 with an injury arising out of international air transport; if a claim cannot be asserted under the
10 Convention, it cannot be asserted at all.” Id.
11 The Court conducted a thorough analysis of preemption in Tavantzis I. There, though the
12 Plaintiffs conceded in the FAC that the Montreal Convention governed liability “for damage
13 sustained by Plaintiffs in the bodily injury of Plasencia,” FAC ¶ 107, Plaintiffs claimed that
14 American’s subsequent failure to compensate Plaintiffs for those injuries was a breach of the
15 Conditions of Carriage and AA Tariff No. AA1, Tavantzis I at *9-10. The relevant provisions
16 were substantively identical to portions of Article 28 of the Convention but were presented in
17 freestanding agreements, allegedly making the repudiation of those agreements a simple breach of
18 contract claim. Id. The Court disagreed for two reasons. First, the Court found that, despite
19 Plaintiffs’ artful pleading to “frame their claim in the terms of Defendant’s Conditions of Carriage
20 and AA Tariff No. AA1 . . . Plaintiffs’ claim ultimately [sought] relief that falls under the
21 substantive scope of Article 28 of the Montreal Convention and thus would be preempted under
22 Article 29.” Id. Second, Plaintiffs’ claim failed because it was “inextricably intertwined with the
23 injury they experienced” on the aircraft. Id. Plaintiffs could not “have a claim for advance
24 payments without the onboard injury and advance payments are part and parcel to compensation
25 for the onboard injury.” As the Court explained:
26
1 Though this case discusses a precursor to the Montreal Convention, the same analysis governs.
27
See Narayanan v. Brit. Airways, 747 F.3d 1125, 1127 n.2 (9th Cir. 2014) (“[I]n interpreting the
Plaintiffs’ nonperformance claim [was] based on an ex-post failure to
1 redress harm that occurred during the flight. Such a claim [was]
preempted because it [was] based on the onboard accident, and thus
2 f[ell] within the substantive scope of Article 17 of the Montreal
Convention. To hold otherwise would undermine [the] Montreal
3 Convention as the exclusive remedy for such claims.
4 Id at *11; see also Wysotski v. Air Canada, No. C 02-04952 CRB, 2006 WL 581093, at *4 (N.D.
5 Cal. Mar. 6, 2006) (the Convention “would cease to be an exclusive remedy . . . if plaintiffs who
6 could not assert state-law claims for the act itself were nonetheless permitted to sue under state
7 law for . . . ex post failure to redress the harm.”).
8 The Court finds that Plaintiffs’ new breach of contract claim suffers from the same defects
9 as Tavantzis I. This current claim again concerns American’s subsequent failure “to perform” as
10 required under the “binding and enforceable contract” between the parties. SAC ¶¶ 125, 139.
11 This iteration of the claim includes an additional allegation that American “altered the terms
12 defining its liability and made contractual commitments to Plaintiffs that are separate and apart of
13 its liability under the Montreal Convention.” Id. ¶ 128. Although Plaintiffs allegations claim
14 otherwise, American’s failures to perform are grounded in language from the Conditions of
15 Carriage and Tariff No. AA1 that “copy verbatim from the Montreal Convention, specifically
16 incorporate provisions of the Montreal Convention, and describe alleged duties derived from
17 Article 28 of the Montreal Convention.” MJP Mot. at 5; compare SAC ¶ 133 (quoting Tariff No.
18 AA1, ECF No. 85-3) (alleging contract required airline to, “without delay,” “make ‘as an advance’
19 a payment sufficient to meet” “the ‘immediate economic needs of, and hardship suffered by’
20 Plaintiffs”) with Montreal Convention art. 28 (requiring airline to “make advance payments
21 without delay to a natural person or persons who are entitled to claim compensation” resulting
22 from injury). Plaintiffs’ new details and allegations do not cure the overarching deficiency
23 because their claim still “seeks relief that falls under the substantive scope of Article 28 of the
24 Montreal Convention and thus would be preempted under Article 29.” Tavantzis I at *10. As
25 alleged, Plaintiffs’ current Claim III is also “inextricably intertwined with the injury [Plaintiffs]
26 experienced” on the aircraft and thus preempted for that reason as well. Id.
27 While Plaintiffs concede that American’s alleged pre-flight and onboard failures “give rise
1 they argue that American’s post-flight conduct, i.e., the failure to expeditiously address Plaintiffs’
2 subsequent grievances removes this claim from the ambit of the Montreal Convention.2 MJP
3 Opp’n at 4, ECF No. 114. But Wysotski, a case the Court cited in its previous order, stands for the
4 opposite proposition. 2006 WL 581093, at *1. There, the plaintiffs argued that their state law
5 claims were not preempted because they arose from defendant’s misrepresentations and related
6 conduct preceding and following the actual flight. Id. at *3. But, as the Court noted, the
7 Convention “would cease to be an exclusive remedy . . . if plaintiffs who could not assert state-law
8 claims for the act itself were nonetheless permitted to sue under state law for . . . ex post failure to
9 redress the harm.” Id. at *4.
10 Plaintiffs’ breach of contract claim is preempted by the Montreal Convention. The Court
11 GRANTS American’s motion for judgment on the pleadings as to Claim III.
12 B. Testimony of Ret. Captain Richard J. Levy
13 American argues that the Court should exclude Capt. Levy’s opinions because the opinions
14 (1) are unreliable under the Daubert standard; (2) exceed the scope of his aviation expertise; (3)
15 rely on destroyed data; and (4) supplant the jury’s function by opining on the ultimate facts. See
16 generally Daubert Mot. Overall the Court finds that Capt. Levy’s opinions are reliable and will be
17 helpful to the jury. Nevertheless, the Court also finds that Capt. Levy exceeds the scope of his
18 expertise when he discusses flight attendant conduct, and the Court limits those portions of his
19 opinions accordingly. See Ex. A to Order.
20 1. Reliability
21 American concedes that Capt. Levy is qualified to be an Aviation Expert, see Daubert
22 Reply at 1, but disputes the reliability of his experience as the basis for his opinions. To support
23 this contention, American advances three reasons, none of which are persuasive. First, American
24 argues that Levy’s testimony is unreliable because it does not explicitly “set forth what Levy was
25 asked to opine on,” Daubert Mot. at 6, but American never explains why the imprecision
26
2 Plaintiffs also advance an argument that dismissing this claim amounts to complete preemption
27
and would wholly displace all causes of action based on state law. See MJP Opp’n at 7-8, ECF
1 surrounding the scope of Capt. Levy’s engagement renders his opinions unreliable. What Capt.
2 Levy thought the contours of his assignment were has no bearing on his qualifications or
3 experience; he is still a flight training instructor who for 41 years served as a commercial pilot for
4 Defendant American Airlines. Daubert Opp’n at 4. “Expert opinions are relevant if the
5 knowledge underlying them has a ‘valid connection to the pertinent inquiry.’” Mullins v. Premier
6 Nutrition Corp., 178 F. Supp. 3d 867, 888 (N.D. Cal. 2016) (quoting United States v. Sandoval-
7 Mendoza, 472 F.3d 645, 654 (9th Cir.2006) (internal quotation marks and alteration omitted)).
8 Second, American argues that Capt. Levy’s opinions are unreliable because his opinions
9 do not cite directly to the record or engage in sufficient “analysis.” The facts of this case are not
10 so complicated that it requires citations to the record to understand the context of Capt. Levy’s
11 opinions. His opinions reflect the application of his specialized knowledge and experience to the
12 straightforward facts of this case, which he describes at the outset of his report. See generally
13 Report. Because Plaintiffs submit Capt. Levy as an expert for his experience, Levy need not have
14 conducted any “analysis” in the manner American insists he must. See Hangarter, 373 F.3d at
15 1017 (quoting United States v. Hankey, 203 F.3d 1160, 1169 (9th Cir. 2000)) (“Where an expert
16 testifies from experience, the “reliability [of the expert’s testimony] depends heavily on
17 the knowledge and experience of the expert, rather than the methodology or theory behind it.”).
18 Relying on experience when considering the reasonable response in the face of different scenarios
19 is not a groundless pontification of “ipse dixit,” as American repeatedly claims in its motion. See
20 generally Daubert Mot.
21 Finally, American contends that Capt. Levy’s opinions are irrelevant because they do not
22 have “any tendency to make a fact more or less probable than it would be without the evidence,”
23 as required under Fed. R. Evid. 401. Daubert Mot. at 6. This argument strains credulity. It is
24 certainly relevant, and makes some facts more or less probable, if the American flight in this case
25 had sufficient fuel for the pilot to turn the plane around if Plasencia presented stroke symptoms an
26 hour and a half into the flight (a fact that is disputed by the parties). See Report Op. 2. Given the
27 liberal relevance standards of Fed. R. Evid. 401, the Court will not exclude Levy’s opinions on
1 2. Scope
2 American’s arguments that Capt. Levy goes beyond the scope of his expertise have more
3 merit. American specifically challenges Capt. Levy’s statements regarding the proper conduct of
4 American employees, other than the pilot, who were working on the aircraft during Plaintiffs’
5 flight. As an expert, Levy is allowed to make certain factual assumptions within his opinions.
6 See Fed. R. Evid. 702, advisory committee notes to 2000 amendments (“The language ‘facts or
7 data’ is broad enough to allow an expert to rely on hypothetical facts that are supported by the
8 evidence.”). But, Capt. Levy’s experience was as a pilot, not a flight attendant. He is not
9 qualified to opine on whether the flight attendants on board contravened policy or acted
10 negligently. See United States v. Garcia, 7 F.3d 885, 889 (9th Cir. 1993) (citing United States v.
11 Little, 753 F.2d 1420, 1445 (9th Cir. 1984)); see also Report Op. 2 (calling flight attendant
12 decision “an obvious, serious mistake” despite declaring “I am not opining on Flight Attendant
13 conduct”). Consequently, the Court strikes all portions of Capt. Levy’s testimony that opine on
14 the behavior, conduct, or propriety of any American employee other than the pilot. See Ex. A to
15 Order.
16 3. Origin of Flight Track Data
17 The flight data that Capt. Levy used in his report is reliable. American argues otherwise,
18 suggesting that the flight data is suspect because it was obtained from third party FlightRadar24
19 and is now no longer available on that site. Daubert Mot. at 8. Plaintiffs respond that the limited
20 data that Capt. Levy relied upon—a cropped rendering of the flight path after an hour and a half of
21 flight time—was provided to American.3 Report at 8; Daubert Opp’n at 4-5. That is clearly
22 sufficient under Civil Procedure Rule 26. Fed. R. Civ. P. 26(a)(2)(B)(ii) (testifying expert need
23 only provide “the facts or data considered by the witness in forming” opinions as part of report).
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25

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3 American’s insistence that Capt. Levy “destroyed” the FlightRadar24 data is deliberately obtuse.
American had equal access to the public data that Capt. Levy used and failed to retrieve it before
27
the website deleted it in accordance with its regular retention policies. Daubert Opp’n at 5 n.9.
1 4. Ultimate Issue
2 The Federal Rules of Evidence are clear: “An opinion is not objectionable just because it
3 embraces an ultimate issue.” Fed. R. Evid. 704; see also Elsayed Mukhtar v. California State
4 Univ., Hayward, 299 F.3d 1053, 1066 (9th Cir. 2002), overruled on other grounds by Estate of
5 Barabin v. AstenJohnson, Inc., 740 F.3d 457 (9th Cir. 2014) (“[E]xpert testimony concerning an
6 ultimate issue is not per se improper.”). American conflates factual issues and legal issues;
7 experts are only proscribed from opining on the latter when it goes to the ultimate issue in the
8 case. In re Northrop Grumman ERISA Litig., No. CV 06-06213-AB (JCX), 2017 WL 11685251,
9 at *3 (C.D. Cal. Mar. 3, 2017) (quoting Hangarter v. Provident Life & Acc. Ins. Co., 373 F.3d
10 998, 1016 (9th Cir. 2004) (emphasis in original) (“[E]xpert witnesses may give an opinion that
11 ‘embraces an ultimate issue to be decided by the trier of fact,’ but ‘cannot give an opinion as to her
12 legal conclusion, i.e., an opinion on an ultimate issue of law.”). Capt. Levy does not opine on any
13 legal issues, so there is no reason to exclude Levy’s proffered testimony on those grounds.
14 American’s remaining arguments go to the weight, not the admissibility, of Capt. Levy’s
15 opinions. See Mot. at 8-9 (proposing exclusion based on Capt. Levy’s reliance on Flight
16 Operation Manual, discrepancies in testimony); Hangarter v. Provident Life & Acc. Ins. Co., 373
17 F.3d 998, 1017 n.14 (9th Cir. 2004) (quoting Children’s Broad. Corp. v. Walt Disney Co., 357
18 F.3d 860, 865 (8th Cir. 2004)) (“[T]he factual basis of an expert opinion goes to the credibility of
19 the testimony, not the admissibility, and it is up to the opposing party to examine the factual basis
20 for the opinion in cross-examination.”); Alaska Rent-A-Car, 738 F.3d at 969 (trial court is
21 “supposed to screen the jury from unreliable nonsense opinions, but not exclude opinions merely
22 because they are impeachable”); Wendell v. GlaxoSmithKline LLC, 858 F.3d 1227, 1237 (9th Cir.
23 2017) (“Where, as here, the experts’ opinions are not the ‘junk science’ Rule 702 was meant to
24 exclude, the interests of justice favor leaving difficult issues in the hands of the jury and relying on
25 the safeguards of the adversary system—vigorous cross-examination, presentation of contrary
26 evidence, and careful instruction on the burden of proof—to attack shaky but admissible
27 evidence.”) (cleaned up). The Court will not exclude Capt. Levy’s testimony on those grounds.
] motion. The Court appends to this Order a modified excerpt of Capt. Levy’s report, noting the
2 || parts to be stricken. See Ex. A to Order. Except for the stricken language, Capt. Levy’s opinions
3 and testimony are admissible.
4 || IV. CONCLUSION
5 For the foregoing reasons, it is hereby ordered that:
6 (a) American’s motion for judgment on the pleadings is GRANTED.
7 Plaintiffs’ breach of contract claim (Claim IIT) is DISMISSED
8 WITH PREJUDICE.
9 (b) American’s Daubert motion is GRANTED IN PART AND
10 DENIED IN PART.
1] IT IS SO ORDERED.
«3 12 || Dated: May 7, 2025 /
#e ‘
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3 Noél Wise
14 United States District Judge

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Source: Frix Law Library, https://www.frixlaw.com/law-library/cases/11033807. Public record. Not legal advice.