What was found
DURING RUN-UP, OVERSPEED FAIL ON CAD # 1 (SENSOR TEST OUT OF LIMIT ON PINS 4-5, READS 222-224.5). REPLACED MAGNETIC SENSOR (ARRIEL SPC: 77-14-00-01-020C) IAW 77-14-00-900-802-A01 MOC OK.
- Difficulty date
- October 29, 2021
- Submitted
- October 29, 2021
- Operation
- General aviation
- Filed by
- QR9R369D
M1 Support Services - Make and model
- Bolkms BK117C2
- Aircraft serial
- 07720259153
- Aircraft time
- 3,006 hours
- System (JASC)
- 7714 · Engine RPM Indicating System
- Part
- Sensor
- Part number
- 9580115910
- Part serial
- 15967
- Condition
- Out Of Limits
- Part time
- 1,689 hours
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- C
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.