Service difficulty report · Control Unit · Emb EMB505

Difficulty date
March 27, 2024
Submitted
March 29, 2024
Operation
Air carrier
Aircraft
N447QS
Make and model
Emb EMB505
Aircraft serial
50500635
Aircraft time
2,496 hours, 1,923 cycles
Part
Control Unit
Part number
DAP0010011
Part serial
343350317
Condition
Faulted
Location
Rt Mlg Brakes
Stage of operation
TX
How discovered
C
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

ON TAXI FOR DEPARTURE, NOTICED PULSING IN BRAKES. ROLLED DOWN TO A QUICK TAXI SPEED FOR RUNWAY EXIT, RT MLG BRAKE GRABBED FULLY, CAUSING RT TIRE TO SKIP, BEGAN ALTERNATING QUICKLY BETWEEN FULL GRAB & NOTHING. HAD TO TAXI IN SLOWLY AS BREAK APPLICATION WOULD CAUSE EXCESSIVE PULL TO RT & SLIGHT TIRE SKIP. MCC REQUESTED AN ETD FROM MANUFACTURER TO INSTALL A -10 OVER A -11. RECEIVED A MODIFIED BRAKE CONTROL UNIT FROM CUSTOMER. RECEIVED ETD 2024-P300-04900368, R & R BCU IAW AMM 32-41-01-04. PERFORMED FUNCTIONAL TEST IAW AMM 32-41 -00-720-801 . TEST WAS SATISFACTORY. PERFORMED BRAKE BLEEDS IAW AMM 32-40-00-870-801. PERFORMED TAXI CHECK, NO GRAB FELT IN THE BRAKES.

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