Service difficulty report · Rod Bearing · Beech A23A

Difficulty date
December 24, 1999
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N4708T
Make and model
Beech A23A
Aircraft serial
M10104
Engine
Cont IO346A
Part
Rod Bearing
Condition
Worn
Location
Engine
Part time
3,153 hours
Stage of operation
NR
Nature of condition
O
Precautionary procedure
O

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

What was found

IN-FLIGHT, NR 3 CONNECTING ROD BEARING FAILED POSSIBLY DUE TO WEAR. EXCESSIVE HEAT AND EXPANSION BUILD-UP AROUND THE NR 3 CONNECTING ROD CRANKPIN AND CAUSING THE ROD BOLTS TO BREAK APART AT THE SHANK. THE NR 3 CONNECTING ROD IS CONNECTED FROM THE CRANKSHAFT CAUSING COMPLETE ENGINE FAILURE. SUBMITTER STATED THE ENGINE WAS OPERATING 93 HOURS OVER THE MANUFACTURER'S RECOMMENDED OVERHAUL TIME.

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