NTSB CAROL · Event
Event SEA92LA006
Aircraft involved
Probable cause & findings
A SEIZED ENGINE EXHAUST VALVE. FACTORS INCLUDE ROUGH TERRAIN AND A COLLAPSED NOSE GEAR.
Factual narrative
THE STUDENT PILOT OF THE CESSNA 150 ELECTED TO MAKE AN EMERGENCY LANDING IN AN OPEN FIELD, WHEN SHE LOST PARTIAL POWER, AND EXPERIENCED SEVERE VIBRATIONS. AFTER TOUCHDOWN ON THE ROUGH TERRAIN, THE NOSE GEAR COLLAPSED AND THE AIRCRAFT NOSED OVER. LATER INVESTIGATION REVEALED THAT AN EXHAUST VALVE WAS SEIZED IN ITS GUIDE, AND WAS STUCK IN THE OPEN POSITION. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1991_SEA92LA006.txt.
Findings + structured fields enriched from FAA avall.mdb.
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