SDR CA051123007

Service difficulty report · Cylinder · Cessna 402B

Difficulty date: November 15, 2005
Submitted: December 2, 2005
Operation: General aviation
Make and model: Cessna 402B
Aircraft time: 11,108 hours
Engine: Cont TSIO520E
Propeller: Mcauly 3AF32C505
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder
Part number: AEC631397
Condition: Cracked
Location: Engine
Component: Engine · Cont · TSIO520E
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

(CAN) AT THE 50 HRS INSPECTION OF THE AIRCRAFT, AT CYLINDER COMPRESSION TEST, MFG ENGINE SB M91-6, AND THE TEST FAILED FOR CYLINDER NR 4 DUE TO A LEAK FOUND BETWEEN FINS AT CYLINDER HEAD (THE SIDE OF THE EXHAUST EXIT). THE CYLINDER REPLACED AND AIRCRAFT RETURN TO SERVICE AFTER THE INSPECTION.

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