Service difficulty report · Switch · Bombdr DHC8402

Difficulty date
March 25, 2017
Submitted
March 27, 2017
Operation
Air carrier
Aircraft
N440QX
Make and model
Bombdr DHC8402
Aircraft serial
4347
Aircraft time
15,200 hours, 16,163 cycles
Part
Switch
Part number
BW9021BBDTC2037
Condition
Failed
Location
Tcs
Stage of operation
CL
How discovered
O
Nature of condition
P
Precautionary procedure
A

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

What was found

LOSS OF ALL FLIGHT DIRECTOR AND AUTOPILOT FUNCTIONS DURING CLIMB OUT THROUGH 6000 FT. FOUND NO FAULTS IN CDS. FOUND THE FIRST OFFICER`S TCS SWITCH TO BE STUCK IN THE ON MODE. REMOVED AND REPLACED THE TCS SWITCH IAW AMM 22-11-51-000/400-801. OP TESTED GOOD. FD BARS NOW COME INTO VIEW WITH GA BUTTONS PUSHED.