Service difficulty report · Brake · Bombdr DHC8402

Difficulty date
October 10, 2010
Submitted
October 14, 2010
Operation
Air carrier
Aircraft
N419QX
Make and model
Bombdr DHC8402
Aircraft serial
4145
Aircraft time
9,645 hours, 10,337 cycles
Engine
Pwc PW150A
Part
Brake
Part number
216052
Part serial
1438P
Condition
Dragging
Location
Zone 700
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

NO BRAKES AFTER TOUCHDOWN WITH FULL FORCE APPLIED THEN PULSATED DURING SLOW DOWN, MOSTLY ON RT SIDE AT LOW SPEEDS. ON TROUBLESHOOTING, PERFORMED LOW SPEED TAXI, FOUND BRAKING FUNCTION TO BE NORMAL WITHOUT ANTI SKID ON. WITH ANTI SKID ON BRAKES PULSED ON AND OFF BETWEEN 28-30 KNOTS. AFTER PARKING ALL BRAKE TEMPS WHERE THE SAME. ON FURTEHR EXAM FOUND INBD BRAKES 2 AND 3 HARD TO TURN (DRAGGING). R & R NR 2 & 3 BRAKES IAW MX TASK CARD 6324201, PERFORMED FUNCTIONAL OF MLG BRAKE SYS IAW TASK 32-42-00-720-801, FUNCTIONAL TEST GOOD, NO DEFECTS NOTED, ALL BRAKES PRESS 3000 PSI WHEN BRAKES APPLIED AND 50 PSI WHEN RELEASED. PLACED ANTI-SKID ON MEL 468781. RETURNED TO SERVICE.