Service difficulty report · Alternator · Cessna 525C

Difficulty date
July 22, 2020
Submitted
July 27, 2020
Operation
General aviation
Aircraft
N257DV
Make and model
Cessna 525C
Aircraft serial
0052
Aircraft time
2,987 hours, 2,457 cycles
Engine
Wilint FJ444A
Engine time
2,987 hours, 2,457 cycles
Part
Alternator
Part number
944951
Part serial
419
Condition
Shorted
Location
Rt Engine
Part time
706 hours, 573 cycles
Stage of operation
TX
How discovered
O
Nature of condition
B, J
Precautionary procedure
H

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

What was found

UPON TAXI TO HOME BASE HANGAR, CREW REPORTED A AMBER RH ALTERNATOR FAIL CAS MESSAGE. GROUND CREW SAW WHITE SMOKE COMING FROM RH ENGINE COWL. AN INSPECTION REVEALED THE AC ALTERNATOR HAD INTERNALLY SHORTED AND MELTED SOME OF ITS WINDINGS. PROCEDURES FOR CESSNA 525C AND WILLIAMS FJ44-4A WERE FOLLOWED TO REPLACE THE ALTERNATOR AND RETURN THE AIRCRAFT TO SERVICE.

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