What was found
MAST SEAL, P/N 28905-3499, WORE GROOVE IN MAST BEARING NUT, P/N 406-040-090-103. UPON REMOVAL, FOUND TORQUE ON NUT BELOW RECOMMENDED TORQUE OF 450 FEET/POUNDS (HAND TIGHT).
- Difficulty date
- December 28, 1999
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N407PR
- Make and model
- Bell 407
- Aircraft serial
- 53232
- System (JASC)
- 6230 · Main Rotor Mast/Swashplate
- Part
- Nut
- Part number
- 406040090103
- Condition
- Leaking
- Location
- Mast Bearing
- Part time
- 1,460 hours
- Stage of operation
- IN
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.