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FTW90LA035

1989-11-25 · CROSBYTON, Texas, United States · Minor · 1 aircraft · Status: Completed

Airport 8F3

N27007 has since been reassigned. It is now registered to a different aircraft (AERO COMMANDER 112, built 1976), which was not involved in this event.

Aircraft involved

Probable cause & findings

IMPROPER OVERHAUL OF THE AIRCRAFT ENGINE BY MAINTENANCE PERSONNEL THAT LED TO THE COMPLETE LOSS OF ENGINE OIL DUE TO AN UNDERTORQUED OIL COOLER ASSEMBLY. FACTORS IN THE ACCIDENT WERE THE FAILURE OF MAINTENANCE PERSONNEL TO DETECT THE CONDITION DURING THE ANNUAL INSPECTION AND THE UNSUITABLE TERRAIN FOR THE FORCED LANDING.

Factual narrative

THE AIRCRAFT ENGINE FAILED, AFTER A COMPLETE LOSS OF OIL, DUE TO AN UNDERTORQUED OIL COOLER TO ENGINE ASSEMBLY THAT PERMITTED THE OIL TO BYPASS THE SEAL. THE ENGINE HAD BEEN IN SERVICE 162 HOURS SINCE OVERHAUL AND 3 HOURS SINCE ANNUAL INSPECTION. THE PILOT EXECUTED A FORCED LANDING TO ROUGH TERRAIN THAT CAUSED THE MAIN GEAR TO SHEAR, NOSE GEAR TO COLLAPSE, AND THE AIRCRAFT TO NOSE OVER. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1989_FTW90LA035.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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