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MIA88IA011

1987-10-15 · MAYAGUEZ, Puerto Rico · None · 1 aircraft · Status: Completed

Airport MAZ

N436CA has since been reassigned. It is now registered to a different aircraft (CESSNA 172S, built 2017), which was not involved in this event.

Aircraft involved

Factual narrative

THE COMMUTER FLT WAS TAXIING TO THE GATE, WHEN THE PLT OBSERVED A FIRE WARNING LIGHT FOR THE NO 2 ENG. THE FIRE BOTTLE WAS DISCHARGED & THE FIRE WAS EXTINGUISHED. AN EXAM REVEALED THAT A FUEL LINE, P/N 3103385-1, HAD BROKEN AND HAD STARTED A FIRE. AN EXAM OF THE FUEL LINE REVEALED T00L MARKS ON THE LINE. A LABORATORY EXAM REVEALED THE LINE HAD FAILED DUE TO FATIGUE & THE FATIGUE HAD ORIGINATED IN THE AREA OF THE TOOL MARKS. THE TOOL MARKS SUGGESTED THAT A CRESCENT WRENCH OR SIMILAR TOOL HAD BEEN USED TO BEND THE LINE IN ORDER TO ALIGN THE LINE WITH THE ATTACH FITTING. THE COMPANY WAS ADVISED OF THE FINDINGS & A COMPANY DIRECTIVE WAS ISSUED TO DISCONTINUE THE PRACTICE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1987_MIA88IA011.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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