Accident Mooney M20E N1927Y, Tuesday 1 August 2000

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Date:	Tuesday 1 August 2000
Time:	18:30 LT
Type:	Mooney M20E
Owner/operator:	Private
Registration:	N1927Y
MSN:	234
Year of manufacture:	1964
Total airframe hrs:	4425 hours
Engine model:	Lycoming IO-360-A1A
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Oregon City, OR - United States of America
Phase:	Landing
Nature:	Private
Departure airport:	Estacada, OR (5S9)
Destination airport:	Mulino, OR
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
While descending through 2,000 feet, the Mooney M20E's Lycoming IO-360-A1A engine stopped operating. The pilot switched fuel tanks and activated the fuel boost pump without success, and then executed a forced landing to rough/uneven terrain in an agricultural field. On site examination revealed fuel in both fuel tanks. The FAA inspector assigned to the accident reported that in a post-crash examination and test run of the engine the 'fuel control servo appeared to be blocked for unknown reason' and that 'fuel pressure going in the fuel servo was considerably/extremely low at [the] outlet and would not sustain engine operation.' The fuel servo was removed and flow checked with no discrepancies noted. The servo was then re-installed in the aircraft and the FAA inspector observed a second test run during which the engine successfully operated with no discrepancies noted.

Probable Cause: A loss of engine power for undetermined reason(s). A factor was the rough/uneven terrain.

Accident investigation: