SDR 96ZZZX4786

Service difficulty report · Crankcase · Piper PA34200T

Difficulty date: March 13, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N321GS
Make and model: Piper PA34200T
Aircraft serial: 347770419
Engine: Cont TSIO360E
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Crankcase
Part number: 303821
Condition: Cracked
Location: Nr 3 Bearing
Stage of operation: IN
Nature of condition: K
Precautionary procedure: K

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

What was found

DURING TROUBLESHOOTING TO DETERMINE ORIGIN OF AN OIL LEAK, FOUND CASE CRACKED ON BOTH VALVES AT NR 3 BEARING WEB. UPON TEAR DOWN, CASE HALVES WERE REJECTED DUE TO FAILING HARDNESS TEST. CRACKS WERE IN AREA OF A PREVIOUS REPAIR. CAUSE OF FAILURE UNKNOWN.

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