What was found
UNEXPLAINED TAIL ROTOR VIBRATION AND GRITTY SUBSTANCE IN GEARBOX. REPLACE UNIT.
- Difficulty date
- February 14, 2002
- Submitted
- September 15, 2003
- Operation
- Air carrier
- Aircraft
- N407XM
- Make and model
- Bell 407
- Aircraft serial
- 53464
- Aircraft time
- 1,093 hours
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Gearbox
- Part number
- 406040400117
- Part serial
- A1204
- Condition
- Vibration
- Location
- Tail Rotor
- Part time
- 1,093 hours
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- E
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.