SDR CA110225007

Service difficulty report · Crankshaft · Bbavia 8GCBC

Difficulty date: January 11, 2011
Submitted: September 14, 2015
Operation: General aviation
Make and model: Bbavia 8GCBC
Aircraft time: 5,608 hours
Engine: Lyc O360C2E
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Crankshaft
Condition: Corroded
Location: Engine
Stage of operation: IN
How discovered: 9
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) DURING A COMPANY DIRECTED 2 YEAR INSPECTION OF THE ID OF THE CRANKSHAFT TO BE COMPLETED IAW SB 505B. DURING THE INSPECTION IT WAS DISCOVERED THAT THE ID WAS CORRODED. THE SB FOR A CORRODED CRANKSHAFT WAS COMPLETED AND THE PITTING WAS THEN REMOVED. THE NEW ID IS AT MAX ID WITH NO PITTING REMAINING. THE OPTIONAL REAR PLUG HAS BEEN INSTALLED AS IT HAS SHOWN TO REDUCE THE PITTING AND CORROSION IN THE CRANKSHAFT. WSDR 20110222004 FOR FURTHER DETAILS.