Service difficulty report · Bearing · Beech S35

Difficulty date
January 30, 2002
Submitted
February 13, 2002
Operation
General aviation
Aircraft
N10WR
Make and model
Beech S35
Aircraft serial
D7689
Engine
Cont IO520*
Part
Bearing
Condition
Inoperative
Location
Alternator
Part time
340 hours
Component
Alternator
Component part number
1100715
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

AIRCRAFT CAME IN FOR ALTERNATOR FAILURE. TESTED ALTERNERATOR SYSTEM AND DETERMINED ALTERNATOR, FAILED. REMOVED ALTERNATOR, NOTICED THAT THE COTTER KEY, NUT AND WASHER THAT HOLDS THE CLUTCH ON, WAS MISSING. FOUND CLUTCH ASSEMBLY BROKEN AND SHAFT OF ALTERNATOR VERY WORN OUT. REMOVED ENGINE AND OIL PAN. FOUND MISSING HARDWARE IN OIL PAN. APPEARS SHAFT BEARINGS WORN OUT AND SHAFT WAS LOOSE ENOUGH TO BAKE COTTER KEY AND TO DISLODGE NUT AND WASHER. ALTERNATOR INTERIOR OIL SOAKED. FRONT BEARING/SEAL WORN OUT.

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