What was found
DURING M/R HEAD REMOVAL, MAINTENANCE FOUND 6 OUT OF 12 M/R HEAD MOUNT SPECIAL WASHERS CRACKED ON INNER RADIUS.
- Difficulty date
- December 15, 2020
- Submitted
- December 15, 2020
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 1572378
- System (JASC)
- 6220 · Main Rotor Head
- Part
- Washer
- Part number
- 1051310417
- Condition
- Cracked
- Location
- M/R Head
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.