SDR 97ZZZX2660

Service difficulty report · Cylinder · Cessna 172B

Difficulty date: May 5, 1997
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N8220X
Make and model: Cessna 172B
Aircraft serial: 17248720
Engine: Cont O300D
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder
Part number: 641916
Condition: Cracked
Location: Head
Part time: 3,518 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 AN INSPECTION, CYLINDER WAS FOUND WITH LOW COMPRESSION/EXHAUST VALVE LEAKAGE. CYLINDER WAS REMOVED FOR REPAIR AND SENT TO ENGINE SHOP. AFTER CLEANING, NOTED THE HEAD WAS CRACKED FROM THE ROCKER COVER FLANGE THROUGH THE EXHAUST PORT AND ACROSS TO THE UPPER SPARKPLUG HOLE. CYLINDER WAS REPLACED WITH A NEW ASSEMBLY.

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