SDR 97ZZZX3695

Service difficulty report · Valve · Mooney M20F

Difficulty date: May 20, 1997
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N6950V
Make and model: Mooney M20F
Aircraft serial: 221323
Engine: Lyc IO360A1A
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Valve
Condition: Stuck
Location: Eng Nr 4 Exhaust
Stage of operation: CL
Nature of condition: E, R
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENGINE RAN ROUGH AT TAKEOFF, AIRCRAFT LOST POWER. AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE DURING A FORCED LANDING. EXAMINATION FOR THE ENGINE REVEALED AN OPEN EXHAUST VALVE, CYLINDER NR 4. ENGINE HAD A CYLINDER, NR 4 EXHAUST VALVE STUCK.

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