What was found
SYSTEMIC AND PREMATURE FAILURE OF THE T/R HEAD SPHERICAL BEARINGS RESULTING IN EXCESSIVE RADIAL PLAY AND TAIL ROTOR VIBRATIONS.
- Difficulty date
- June 11, 2021
- Submitted
- June 11, 2021
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- System (JASC)
- 6420 · Tail Rotor Head
- Part
- Bearing
- Part number
- 1053170023
- Condition
- Out Of Tolerance
- Location
- T/R Head
- 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.