What was found
TRANSMISSION CHIP PLUG INDICATED METAL WAS BEING MADE. ON TEARDOWN OF TRASMISSION, FOUND THAT THE DUPLEX BEARINGS WERE BREAKING DOWN.
- Difficulty date
- July 31, 2013
- Submitted
- August 1, 2013
- Operation
- Air carrier
- Aircraft
- N404AL
- Make and model
- Bell 407
- Aircraft serial
- 53479
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Bearing
- Part number
- 407340032101
- Part serial
- ZS11571AB
- Condition
- Failed
- Location
- M/R Transmission
- Component
- Transmission · Bell
- Component part number
- 407040006107
- 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.