What was found
MAIN ROTOR GEARBOX BEARING HAS AXIAL PLAY THAT EXCEEDS ALLOWABLE LIMITS, BEARING DID NOT REACH ITS EXPECTED 5000HR LIFE.
- Difficulty date
- December 12, 2002
- Submitted
- December 16, 2002
- Operation
- Air carrier
- Aircraft
- N9YTJM
- Make and model
- Bell 412
- Aircraft serial
- 33159
- Aircraft time
- 16,501 hours
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Bearing
- Part number
- 412010182101
- Part serial
- NH5543
- Condition
- Worn
- Location
- M/R Gearbox
- Part time
- 3,240 hours
- 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.