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Nunez v. American Airlines, Inc.

U.S. District Court, Southern District of Florida · S.D. Fla. · Florida bar guidance

Pro-se party

Conduct

A pro se plaintiff cited two cases, "Greene v. American Airlines" and "Doe v. Major Airline," that the magistrate judge's own search confirmed do not exist.

Consequence

Here the R&R recommended dismissal with prejudice both on the merits and as a sanction; the district judge adopted it in full, resting the dismissal on Montreal Convention futility.

Lesson

Here the magistrate judge rejected a "citation error" explanation because the fake cases were never corrected and no real case cited resembled the fake Greene case.

Court sanction

Verified September 28, 2026

Citation
Nunez v. Am. Airlines, Inc., No. 1:25-cv-21630-RKA (S.D. Fla. July 24, 2025) (Reid, M.J.) (Report and Recommendation, ECF No. 50), adopted, (S.D. Fla. June 9, 2026) (Altman, J.) (ECF No. 78)
Decided
June 9, 2026

Summary

John Nunez, proceeding pro se, sued American Airlines over his June 3, 2022 removal from Flight 1124 from Barranquilla, Colombia to Miami, the airline's revocation of his travel privileges, and a denied boarding on April 7, 2025. It was his second suit over the Flight 1124 incident; Judge Altman had dismissed the first without prejudice for repeated failures to follow the Local Rules and court orders. In a July 24, 2025 report and recommendation (ECF No. 50), Magistrate Judge Lisette M. Reid wrote that "it appears that Plaintiff has submitted fake caselaw" in his response to the motion to dismiss: "Greene v. American Airlines, No. 18-CV-11459, 2019 WL 1949830 (S.D.N.Y. May 1, 2019)" and "Doe v. Major Airline (2020)." "As noted by Defendant, and as confirmed by a search conducted by the undersigned," neither case exists. Nunez called the citations an "unintentional and correctable . . . formatting or citation error"; the magistrate judge was "not convinced," noting that he had not corrected them, cited them multiple times with explanatory parentheticals, and "should know better" given his time before the court. The R&R also recounted repeated Local Rules violations and improper filings in this case despite warnings.

AI tool:
Unidentified (the R&R finds the two cases do not exist and quotes O'Brien v. Flick on fake authority "generated by artificial intelligence programs," but does not find that Nunez used AI)
Sanction amount:
None monetary; the adopted R&R recommends dismissal with prejudice as a sanction, and the district judge's order dismisses with prejudice on Montreal Convention futility grounds
This case summary is informational only. Verify the underlying opinion or order against the primary source before relying on it in any filing or client matter.

What sanction did the court impose?

The R&R recommended dismissal with prejudice on two grounds: the claims are preempted by the Montreal Convention and amendment would be futile because they are time-barred under its two-year limitations period, and, separately, "as a sanction for Plaintiff's continued willful violations of the Local Rules and for submitting fake caselaw to the Court." On June 9, 2026 (entered June 10; ECF No. 78), District Judge Roy K. Altman overruled Nunez's objections, which addressed only the Montreal Convention analysis, and wrote that he had also reviewed "the rest of Magistrate Judge Reid's R&R for clear error" and, finding none, would "adopt it in full." The order dismissed the complaint with prejudice, stating as its own reason that the claims "are plainly barred under the Convention"; it does not separately discuss the fake citations or the sanction recommendation. No monetary sanction was recommended or imposed. Nunez filed a notice of appeal to the Eleventh Circuit on July 13, 2026 (ECF No. 79); a September 14, 2026 USCA order (ECF No. 83) is not public, and the appeal's scope and status are unknown.

Why does Nunez v. American Airlines, Inc. matter for law firms using AI?

Nunez v. American Airlines is a pro se case in which fake citations formed part of one of two independent grounds a magistrate judge gave for recommending dismissal with prejudice: “willful repeated violations of the Local Rules, paired with his submission of fake caselaw.” She also wrote that the Local Rules violations “warrant dismissal in and of themselves.” Magistrate Judge Reid confirmed through her own search that the two cases Nunez cited against Montreal Convention preemption do not exist, and she rejected his description of them as a formatting error: he had not corrected them, he cited them several times with explanatory parentheticals, and no other case he cited resembled the fake Greene v. American Airlines. Relying on O’Brien v. Flick and Versant Funding, she treated the citations as a serious misrepresentation and paired them with his repeated Local Rules violations, including in an earlier suit Judge Altman had dismissed on that basis.

The district judge’s adoption order is narrower in what it explains. Nunez objected only to the Montreal Convention analysis of Count I. Judge Altman addressed that objected-to analysis on the merits, reviewed the unobjected-to preemption of Counts II through V for clear error, and then adopted the remainder of the R&R, including the sanction recommendation, after finding no clear error. His stated reason for dismissing with prejudice rather than allowing amendment is that the claims are “plainly barred under the Convention.” The sanction ground is therefore part of the adopted R&R but is not the basis the district judge chose to explain.

For firms, the record shows how a court can fold fake-citation findings into a dispositive recommendation rather than a separate sanctions proceeding. Firms documenting compliance may wish to consider that here the magistrate judge independently verified the citations, weighed the filer’s explanation against the brief itself, and treated a prior dismissal in the same court as relevant to how seriously to take the conduct.

Implications for your firm

Operational steps a firm reading this case may wish to consider documenting. Strategic and rule-application calls belong to your firm's attorneys.

  • Verify authorities an opposing pro se litigant cites; here the defendant flagged the two nonexistent cases and the magistrate judge confirmed them with her own search.
  • Document an opposing litigant's prior dismissals and warnings in the same court; here the R&R relied on the earlier dismissal for Local Rules violations and on repeated warnings in this case.
  • Review which ground a district judge actually relies on when adopting an R&R; here the adopting order explained only the Montreal Convention ground and adopted the rest, including the sanction recommendation, on clear-error review.

Sources

Primary sources

Unverified claims:
  • Eleventh Circuit appeal (notice filed July 13, 2026, ECF No. 79): the September 14, 2026 'USCA Order' (ECF No. 83) is not in RECAP and its content is unknown; no Eleventh Circuit docket for the appeal was found on CourtListener. Whether the appeal challenges the sanction ground and whether it remains live are unverified.