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Atlas / NTSB / FTW90FA015

NTSB CAROL · Event

Event FTW90FA015

1989-10-24 SAN ANTONIO, Texas, United States Airport · SAT None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

A FUEL TANK LEAK, ARCING FROM THE EXTERIOR LIGHTING SYSTEM, AND FAILURE OF COMPANY/MAINTENANCE PERSONNEL TO COMPLY WITH AN AIRWORTHINESS DIRECTIVE (AD).

Factual narrative

AFTER THE PILOT WAS CLEARED FOR TAKEOFF, HE ACTIVATED THE STROBE LIGHTS AND TRANSPONDER. APPROXIMATELY 2 TO 5 SECONDS LATER, A MINOR EXPLOSION OCCURRED AND FIRE ENGULFED THE RIGHT WING. THE AIRPLANE HAD A RECENT HISTORY OF FUEL LEAKS IN THE RIGHT WING. A REVIEW OF THE MAINTENANCE RECORDS REVEALED THAT AIRWORTHINESS DIRECTIVE (AD) 74-24-03 HAD NOT BEEN ACCOMPLISHED. THE AD STATED, 'TO PRECLUDE POSSIBLE IGNITION OF FLAMMABLE FLUIDS AND VAPORS BY ARCING BETWEEN THE STROBE LIGHT AND AIRCRAFT STRUCTURE, DEACTIVATE THE STROBE LIGHT SYSTEM.' THE OPERATOR'S APPROVED AIRCRAFT INSPECTION PROGRAM (AAIP) DID NOT ADDRESS FUEL SYSTEMS AND RELATED COMPONENTS. THE FAA SUBSEQUENTLY ISSUED DIRECTIVES REVISING THE OPERATOR'S AAIP TO INCLUDE ROUTINE INSPECTIONS OF FUEL SYSTEMS AND RELATED COMPONENTS. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1989_FTW90FA015.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗