What was found
(CAN) TRANSMISSION CHIP LIGHT EXPERIENCED IN FLIGHT, METAL FOUND ON TRANSMISION CHIP PLUGS. MAST ASSY REMOVED FOR INSPECTATION. MAST BEARING FOUND TO HAVE 1 UNSERVICEABLE BALL BEARING. NEW BEARING INSTALLED.
- Difficulty date
- January 14, 2011
- Submitted
- September 14, 2015
- Operation
- General aviation
- Make and model
- Bell 407
- Aircraft time
- 3,594 hours
- Engine
- Allsn 250C47B
- System (JASC)
- 6230 · Main Rotor Mast/Swashplate
- Part
- Bearing
- Part number
- 406040036107
- Condition
- Damaged
- Location
- Mast
- Part time
- 3,548 hours
- Component
- Mast Assy
- Component part number
- 407040011
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.