Service difficulty report · None · Beech 100BEECH

Difficulty date
January 21, 2022
Submitted
January 22, 2022
Operation
General aviation
Aircraft
N488HP
Make and model
Beech 100BEECH
Aircraft serial
CE1338
Engine
Cont IO520*
Part
None
Condition
None
Component
Alternator · Aerotech
Component part number
646843
Stage of operation
IN
How discovered
V
Nature of condition
P
Precautionary procedure
K

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

What was found

OPERATOR REPORTED "ALTERNATOR OUT" LIGHT ILLUMINATES INTERMITTENTLY. VISUAL INSPECTION OF WIRING AT ALTERNATOR REVEALED THE ALTERNATOR CASE HALVES WERE NOT SECURED TO EACH OTHER. FURTHER INSPECTION DETERMINED THE 4 PHILISTER HEAD SCREWS THAT HOLD THE CASE HALVES TOGETHER APPEARED TOO LONG, AND ALLOWED THE CASE HALVES TO MISALIGN AND MOVE INDEPENDENTLY. THE ALTERNATOR WAS REMOVED, DRIVE COUPLING AND CRANKSHAFT GEAR INSPECTED AND ALTERNATOR REPLACED. ALTERNATOR WAS 150 HOURS OUT OF REPAIR OR OVERHAUL BY AEROTECH OF LOUISVILLE INC.