What was found
NDI INSPECTION OF THE SECONDARY BOLT REVEALED A CRACK IN BETWEEN 4TH AND 5TH THREAD FROM TOP THREAD OF BOLT.
- Difficulty date
- March 9, 2026
- Submitted
- March 9, 2026
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 9466
- Aircraft time
- 5,304 hours
- System (JASC)
- 6220 · Main Rotor Head
- Part
- Bolt
- Part number
- B62131061202
- Part serial
- 4914
- Condition
- Cracked
- Location
- Main Rotor
- Stage of operation
- IN
- How discovered
- M
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.