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NYC91IA165

1991-07-02 · BUFFALO, New York, United States · None · 1 aircraft · Status: Completed

Airport BUF

Aircraft involved

Probable cause & findings

CHAFFING FIRE DETECTOR LOOP ON THE NUMBER ONE ENGINE.

Factual narrative

THE BOEING 727 200 WAS ON FINAL APPROACH IN THE VICINITY OF THE OUTER MARKER WHEN AN INTERMITTENT FIRE WARNING INDICATION ON THE NUMBER ONE ENGINE STARTED. THE ENGINE WAS SHUT DOWN AND THE FIRE BOTTLE WAS DISCHARGED; HOWEVER, THE FIRE WARNING CONTINUED. WHEN THE AIRPLANE LANDED AND CLEARED THE RUNWAY IT WAS STOPPED. THE FIRE WARNING CONTINUED AND A SECOND BOTTLE WAS DISCHARGED. WHEN THE FIRE WARNING CONTINUED, A PRECAUTIONARY EMERGENCY EVACUATION WAS INITIATED. POST INCIDENT EXAMINATION OF THE AIRPLANE DISCLOSED A CHAFFING FIRE LOOP ON THE NUMBER ONE ENGINE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_NYC91IA165.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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