What was found
(CAN) FREEWHEEL O/H NUT 406-040-543-105, HIGH TORQUE REQUIRED TO REMOVE NUT FROM CAP ASSEMBLY PN:206-040-942-101. BOTH NUT AND CAP, THREADS DESTROYED/GALLING.
- Difficulty date
- September 17, 2015
- Submitted
- April 22, 2016
- Operation
- General aviation
- Make and model
- Bell 407
- Aircraft time
- 4,536 hours
- Engine
- Allsn 250C47B
- System (JASC)
- 6300 · Main Rotor Drive System
- Part
- Nut
- Part number
- 406040543105
- Condition
- Galled
- Location
- Freewheel Unit
- Part time
- 3,028 hours
- Component
- Freewheel
- Component part number
- 406040500133
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.