SDR 20000802SH018

Service difficulty report · Exhaust Valve · Piper PA30

Difficulty date: June 28, 2000
Submitted: August 2, 2000
Operation: General aviation
Aircraft: N8219Y
Make and model: Piper PA30
Aircraft serial: 301347
Engine: Lyc IO320B1A
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Exhaust Valve
Condition: Sheared
Location: Left, Nr 2 Cyl
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

DURING FLIGHT, PILOT HEARD BANG AND NOTICED DIMINISHED POWER. PILOT LANDED WITH BOTH ENGINES RUNNING. ON GROUND, INSPECTION FOUND ''O'' COMPRESSION ON LEFT ENGINE, NR 2 CYLINDER. ON FURTHER INSPECTION, TOP OF EXHAUST VALVE WAS SHEARED OFF STEM. STEM WAS STILL IN PLACE, VALVE WAS GONE, CYLINDERS AND PISTONS WERE BADLY GOUGED. (X)

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