Service difficulty report · Brake · Airbus A321211

Difficulty date
January 23, 2023
Submitted
January 25, 2023
Operation
Air carrier
Aircraft
N170US
Make and model
Airbus A321211
Aircraft serial
1462
Aircraft time
69,895 hours, 26,753 cycles
Part
Brake
Part number
C20534300
Part serial
04041
Condition
Binding
Location
Zone 700 - Gears
Part time
3,762 hours, 1,695 cycles
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

AIRCRAFT WAS GROUNDED: AFTER LANDING ON TAXI SLOWING IN TURN AT 23 KNOTS AND SLOWER SAME BRAKE INDUCED SINE WAVE PULSE AND AIRCRAFT NOSE BOUNCE TOOK PLACE, DECREASE BRAKING AND INTENSITY DECREASES BOUNCE / GALLOP IS SIGNIFICANT, ENOUGH TO BOUNCE FLIGHT CREW AGAINST THE SEAT BELTS IN THE FLIGHT DECK. THE LANDING WAS VERY LIGHT WEIGHT AT ABOUT 136 K LBS. LEFT BRAKE TEMP WAS THE HIGHER OF ALL. CURRENTLY 1 / 240, 2/ 205 , 3/ 185, 4/220. MAINTENANCE REPLACED LEFT MAIN LANDING GEAR #1 BRAKE ASSEMBLY (AALA202301255636) PER AMM 32-42-27 AND REPLACED THE #1 MAIN LANDING GEAR WHEEL / TIRE ASSEMBLY (AALA202301251388) PER AMM 32-41-11. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

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