Service difficulty report · Sensor · Bolkms BK117C2

Difficulty date
July 15, 2026
Submitted
July 15, 2026
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9689
Aircraft time
4,496 hours
Part
Sensor
Part number
9580115900
Condition
Failed
Location
Eng Overspeed
Stage of operation
TX
How discovered
V
Nature of condition
F
Precautionary procedure
C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

OVERSPEED CAUTION LIGHT ILLUMINATED DURING START RUN-UP. REMOVED AND REPLACED #2 ENGINE OVERSPEED SENSOR IAW EMM 77-14-00-900-802-A01.