SDR 95ZZZX4492

Service difficulty report · Cylinder

Difficulty date: July 20, 1995
Submitted: March 26, 2000
Operation: General aviation
Engine: Cont O470U
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder
Condition: Failed
Location: Exhaust Seat
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

CYLINDER CRACKED TWO PLACES BETWEEN SPARK PLUG AND EXHAUST SEAT. EXHAUST SEAT CRACKED. CYLINDER CRACKED ALSO, THREE-QUARTERS AROUND. SUBMITTER RECOMMENDS CYLINDER TT SHOULD BE TRACKED AND CYLINDERS BE RETIRED AFTER 3 ENGINE T.B.O.'S. THIS IS A RECURRING PROBLEM WITH SECOND-RUN CYLINDERS. DO NOT SEE WITH FIRST-RUN CYLINDERS.