What was found
TRIPLE TAC FAILED IN FLIGHT. NR STUCK IN POSITION AND WOULD NOT MOVE. BOTH N2 NEEDLES DID MOVE. REMOVED AND REPLACED TRIPLE INDICATO RPM IAW AMM 62-41-00, 4-3. MOC SUCCESSFULLY COMPLETED.
- Difficulty date
- July 2, 2025
- Submitted
- July 2, 2025
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 9487
- Aircraft time
- 4,603 hours
- System (JASC)
- 6340 · Rotor Drive Indicating System
- Part
- Indicator
- Part number
- B771M40C1005
- Part serial
- 240
- Condition
- Stuck
- Location
- Triple Tach
- Stage of operation
- CR
- How discovered
- V
- Nature of condition
- F
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.