What was found
TRIPLE TACH WENT TO ZERO DURING FLIGHT. ALL OTHER INDICATIONS HAD RTR AND N2S WITHIN THE NORMAL OPERATING RANGE. REMOVED AND REPLACED TRIPLE INDICATOR RPM IAW 77-14-00, 4-1; TESTFLIGHT SUCCESSFULLY COMPLETED.
- Difficulty date
- October 23, 2023
- Submitted
- October 23, 2023
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 11721899447
- Aircraft time
- 2,999 hours
- System (JASC)
- 7714 · Engine RPM Indicating System
- Part
- Tachometer
- Part number
- B771M40C1005
- Part serial
- 372
- Condition
- Failed
- 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.