SDR 95ZZZX4378

Service difficulty report · Piston · Gruman HU16

Difficulty date: July 30, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N7025J
Make and model: Gruman HU16
Aircraft serial: 131910
Engine: Pwa R1830*
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Piston
Condition: Damaged
Location: Rt Eng Nr 9 Cyl
Stage of operation: CR
Nature of condition: J, E
Precautionary procedure: E

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

What was found

AT 6,500 MSL-10 MI E OF DSM, RT ENGINE CHIP DETECTOR LIGHT CAME ON WITH ENGINE VIBRATION. FEATHERED RT ENGINE, PRECAUTIONARY. LANDING NORMAL. FOUND VALVE AND PISTON DAMAGE NR 9 CYLINDER. REPLACED CYLINDER, RECHECKED BOTH ENGINES FOR VALVE CLEARANCE, CHANGED OIL.