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ASN Wikibase Occurrence # 202147
Last updated: 14 January 2021
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Date:18-APR-1999
Time:09:14
Type:Silhouette image of generic C150 model; specific model in this crash may look slightly different
Cessna 150H
Owner/operator:Private
Registration: N22710
C/n / msn: 15068464
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Yuba City, CA -   United States of America
Phase: En route
Nature:Private
Departure airport:O52
Destination airport:Shelter Cove, CA (0Q5)
Investigating agency: NTSB
Narrative:
While cruising, the pilot felt a 'bump,' and the engine began losing power. The pilot applied carburetor heat and adjusted the mixture control, but this action had no effect. The engine progressively lost all power until the propeller eventually just windmilled. The pilot made a forced landing in a wheat field. During rollout, the airplane encountered uneven terrain and nosed over. The pilot owned and operated the airplane. He reported that the airframe's total time was about 8,798.6 hours. The engine had been operated for 1,818.9 hours since being overhauled, and 133.4 hours since its last inspection. An examination of the engine revealed its No. 2 cylinder exhaust valve was fatigued and broken. No other engine related malfunctions were observed.
Probable Cause: A total loss of engine power resulting from the fatigue failure of a cylinder's exhaust valve. A contributing factor was the uneven terrain at the forced landing site. The reason for the fatigue could not be determined.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001205X00502&key=1


Revision history:

Date/timeContributorUpdates
26-Nov-2017 12:41 ASN Update Bot Added

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