Pilot reports he had encountered engine problems in flight and had to land his mooney M20F aircraft in emergency conditions. The lycoming engine quit on rollout. Mechanic found faulty intake valve.

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Attributes
ACN	1105695
Time
Date	201307
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Make Model Name	M-20 F Executive 21
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	None
Component
Aircraft Component	Reciprocating Engine Assembly
Person 1
Function	Single Pilot
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 20000 Flight Crew Type 30
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Flew VFR on top and encountered engine problems. Started descend under partial power and declared an emergency. Was issued IFR clearance and vectored in to ZZZ for an ILS approach. Engine quit on the rollout. Mechanic found the problem to be a faulty intake valve.

Original NASA ASRS Text

Title: Pilot reports he had encountered engine problems in flight and had to land his Mooney M20F aircraft in emergency conditions. The Lycoming engine quit on rollout. Mechanic found faulty intake valve.

Narrative: Flew VFR on top and encountered engine problems. Started descend under partial power and declared an emergency. Was issued IFR clearance and vectored in to ZZZ for an ILS approach. Engine quit on the rollout. Mechanic found the problem to be a faulty intake valve.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.