What was found
(CAN) UNABLE TO RELEASE THE NUT THAT RETAIN THE BEARING HOUSING ON THE MAST POLE AFTER EXCESSIVE FORCE WAS APPLIED, 2000 FT/LBS. A PREVIOUS INCIDENT WAS HANDLE BY MFG ON SN 52351 AND BOTH ASSY WERE RETURNED TO LAB FOR INVESTIGATION.
- Difficulty date
- December 6, 2010
- Submitted
- September 14, 2015
- Operation
- General aviation
- Make and model
- Bell 206L4
- Aircraft time
- 1,235 hours
- Engine
- Allsn 250C30P
- System (JASC)
- 6230 · Main Rotor Mast/Swashplate
- Part
- Nut
- Part number
- 206040078103
- Condition
- Seized
- Location
- Mast
- Part time
- 1,265 hours
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.