Service difficulty report · Bleed Valve · Bolkms BK117C2

Difficulty date
December 10, 2025
Submitted
December 10, 2025
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9714
Aircraft time
4,266 hours
Part
Bleed Valve
Part number
9550164740
Part serial
6907
Condition
Failed
Location
Nr 2 Engine
Stage of operation
TX
How discovered
O
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

NUMBER 2 BLEED VALVE FLAG NOT INDICATED. A TEST FLIGHT EVAL FOUND NR 2 BLEED VALVE INDICATION APPEARED DURING ENGINE START, CLOSED NORMALLY DURING OPERATIONAL TEST, BUT FAILED TO REOPEN AND STAYED CLOSED FOR REMAINDER OF GROUND RUN AND ENGINE SHUTDOWN. REMOVED AND REPLACED BLEED VALVE ASSEMBLY IAW ARRIEL 1 E2 ENGINE MAINTENANCE MANUAL 75-31-00-900-804-A01.