Service difficulty report · Housing

Difficulty date
April 11, 2006
Submitted
April 21, 2006
Operation
General aviation
Part
Housing
Part number
ALU1003
Condition
Worn
Location
Engine
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

THIS ALTERNATOR HAS -0- HOURS TIME-IN-SERVICE. DURING INSPECTION, PRIOR TO SALE, IT WAS DISCOVERED THAT THE ROTOR HAD EXCESSIVE LATERAL MOVEMENT AS A RESULT OF EXCESSIVE WEAR OF THE DRIVE END HOUSING BEARING BORE. THIS CONDITION WOULD HAVE LEAD TO PREMATURE FAILURE OF THE DRIVE GEAR/ALTERNATOR AND COULD HAVE LEAD TO A COMPLETE ENGINE FAILURE. HAVE SEEN THIS SAME PROBLEM IN A VERY LARGE PERCENTAGE OF THESE ALTERNATORS RETURNED TO SERVICE BY OVERHAULER. (K)