Service difficulty report · Control Unit · Bombdr BD1001A10

Difficulty date
October 15, 2025
Submitted
October 20, 2025
Operation
Air carrier
Aircraft
N777QS
Make and model
Bombdr BD1001A10
Aircraft serial
20562
Aircraft time
10,570 hours, 6,095 cycles
Part
Control Unit
Part number
2257A000003
Part serial
00677
Condition
Defective
Location
Flap System
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

ON APPROACH SELECTED FLAPS 10. FLAPS TRACKED ONLY TO 2 DEGREES AND FLAP FAULT AMBER CAS APPEARED. COMPLIED WITH QRH SELECTED FLAPS BACK TO ZERO AND FLAPS FAIL AMBER CAS APPEARED. COMPLIED WITH QRH FOR ZERO FLAP LANDING. LANDED UNEVENTFULLY. B3 CODE #006786 FPU FAULT OR WIRING FAULT. CORRECTIVE ACTION: FLAP CONTROL UNIT REPLACED. OPS CHECK GOOD. IAW CL350 MM 27-52-33