Service difficulty report · Control Valve · Bombdr DHC8402

Difficulty date
September 20, 2016
Submitted
September 23, 2016
Operation
Air carrier
Aircraft
N411QX
Make and model
Bombdr DHC8402
Aircraft serial
4055
Aircraft time
35,970 hours, 37,763 cycles
Part
Control Valve
Part number
60070494
Part serial
JUL010088
Condition
Failed
Location
Brakes
Part time
33,355 hours, 34,649 cycles
Stage of operation
LD
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

BRAKES WEAK ON LANDING, PULLED TO RIGHT SIDE. RIGHT SIDE BRAKES HOT LEFT SIDE COLD TO TOUCH. BLED NR 1 & 2 BRAKES IAW AMM TASK 32-42-00-870-801. NO HELP. LEFT BRAKE DOES NOT APPEAR TO WORK. R & R THE NR 1 & 2 BRAKE IAW MTC 6324201. NO HELP. R & R BRAKE CONTROL VALVE IAW AMM 32-42-06-000/400-801. BLED ALL 4 MAIN LANDING GEAR BRAKES IAW AMM 32-42-00-870-801. SERVICED HYDRAULIC RESERVOIRS. PERFORMED GVI AND LEAK CHECKED BRAKE CONTROL VALVE AND BRAKES. NO LEAKS FOUND. COMPLETED AMM TASK 32-42-00-400-801. FUNCTIONAL TEST OF MLG BRAKE SYS IAW AMM TASK 32-42-00-720-801 GOOD. PERFORMED MTX TAXI, CYCLED BRAKES SEVERAL TIMES. BRAKES FEEL STRONG AND EVEN. NO FURTHER DEFECTS.