SEA92LA006

1991-10-13 · WOODBURN, Oregon, United States · Minor · 1 aircraft · Status: Completed

Aircraft involved

N9263U Cessna C-150M Minor

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. Full investigation docket on data.ntsb.gov ↗.

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