Service difficulty report · Bearing · Robsin R44RAVENII

Difficulty date
July 15, 2014
Submitted
March 12, 2015
Operation
General aviation
Make and model
Robsin R44RAVENII
Aircraft time
1,758 hours
Engine
Lyc IO540AE1A5
Part
Bearing
Condition
Melted
Location
Alternator
Part time
1,954 hours
Component
Alternator · Kelly · ALU8521
Stage of operation
LD
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

(CAN) UPON LANDING AND DURING COOL DOWN PILOT NOTICED A FUNNY ODOR AND HEARD A SQUEALING NOISE. FOLLOWING SHUTDOWN HE NOTICED THE ALTERNATOR BELT SMOKING AND CALLED MAINTENANCE. THE ALTERNATOR LIGHT NEVER DID COME ON. WHEN MAINTENANCE ARIVED THE ALTERNATOR WAS COMPLETELY SIEZED. THE ALTERNATOR WAS DISSASEMLED TO INVESTIGATE THE CAUSE AND DETERMINED IT WAS A FWD BEARING FAILURE.