SDR 95ZZZX4528

Service difficulty report · Shaft Support · Cessna 150L

Difficulty date: August 28, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N21997
Make and model: Cessna 150L
Aircraft serial: 15074599
Engine: Cont O200A
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Shaft Support
Condition: Broken
Location: Exh Rocker Arm
Part time: 3,854 hours
Stage of operation: IN
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 A SCHEDULED INSPECTION, (ACFT HAD SAT FOR ABOUT 6 MONTHS), THE COMPRESSION TEST WAS PERFORMED. NR 1 CYLINDER WAS BLOWING-BY FROM EXHAUST VALVE. TO STAKE THE VALVE, THE ROCKER BOX COVER WAS REMOVED. A BROKEN PIECE OF ROCKER ARM SHAFT SUPPORT WAS FOUND INSIDE OF ROCKER BOX COVER. IT CAME OFF OF EXHAUST SIDE.

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