Service difficulty report · Bearing · Emb EMB120ER

Difficulty date
September 9, 2011
Submitted
September 9, 2011
Operation
Air carrier
Make and model
Emb EMB120ER
Part
Bearing
Part number
M2040AC2
Condition
Failed
Location
Starter Gen
Part time
1,470 hours
Component
Starter Gen · Bfgoodrich
Component part number
23080013B
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

STARTER REMOVED FROM ACFT FOR OVERHAUL. DURING DISASSEMBLY TECHNICIAN FOUND BEARING FAILURE OF THE DRIVE END BEARING. THE COM END BEARING DID NOT FAIL BUT WAS NOTED TO BE ROUGH DURING ROTATION BY HAND. HIDDEN DAMAGE INSPECTION REVEALED STATOR DAMAGE, ARMATURE DAMAGE, SPEED PICKUP AND GEAR DAMAGED.

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