Service difficulty report · Brake Assy · Cessna 750

Difficulty date
June 11, 2019
Submitted
June 13, 2019
Operation
Air carrier
Aircraft
N787JS
Make and model
Cessna 750
Aircraft serial
7500048
Aircraft time
12,172 hours, 7,562 cycles
System (JASC)
3242 · Brake
Part
Brake Assy
Part number
215762
Part serial
0906
Condition
Binding
Location
Main Gear
Part time
1,421 cycles
Stage of operation
TO
How discovered
O
Nature of condition
M, P
Precautionary procedure
C

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

What was found

DURING TAKEOFF ROLL AROUND 35 KNOTS, CREW NOTICED AIRCRAFT PULLING LEFT AND FELT AIRCRAFT STRUGGLING TO ACCELERATE. CREW ABORTED TAKEOFF, EXITED RUNWAY, AND FELT LEFT BRAKE DRAGGING AND FELT MAIN TIRES BLOW. MAINTENANCE EVALUATION FOUND BOTH LEFT MAIN TIRES DEFLATED DUE TO BLOWN WHEEL FUSE PLUGS DUE TO HIGH BRAKE HEAT. MAINTENANCE EVALUATION ALSO IDENTIFIED THE CAUSE OF BRAKE HEAT DUE TO THE LEFT OUTBOARD BRAKE, ONE OF THE PISTONS TILTED (JAMMED) SIDEWAYS, WHICH RESULTED IN BRAKE DRAGGING AND HEAT. LEFT OUTBOARD BRAKE ASSEMBLY REMOVED AND REPLACED. THE LEFT INBOARD BRAKE ASSEMBLY AND BOTH LEFT OB AND IB WHEEL ASSEMBLIES WERE REPLACED.

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