Service difficulty report · Main Bearing · Piper PA31350

Difficulty date
May 9, 2003
Submitted
June 16, 2003
Operation
General aviation
Make and model
Piper PA31350
Engine
Lyc LTIO540J2BD
Propeller
Hartzl HCE3YR2
Part
Main Bearing
Part number
LW13886
Condition
Delaminated
Location
Engine
Part time
1,016 cycles
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

(AUS) METAL CONTAMINATION OF ENGINE OIL SYSTEM RESULTED IN BULK STRIP AND INSPECTION OF ENGINE. INSPECTION FOUND LOSS OF BEARING MATERIAL FROM THE FRONT MAIN BEARING AND DELAMINATION OF METAL FROM THE OTHER MAIN AND BIG END BEARINGS.

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