What was found
AIRCRAFT WAS GROUNDED: NUMBER 4 WHEEL BRAKE TEMP PASSED 300 DEGREES DURING TAXI OUT AT JFK WITH BRAKE FANS ON. NUMBER 4 WHEEL BRAKE TEMP REACHED 440 DEGREES DURING TAXI BACK TO GATE. FOUND NUMBER 3 BRAKE SEIZED. REPLACED NUMBER 4 WHEEL BRAKE FAN MOTOR ASSEMBLY (AALA202109207894) PER AMM 32-48-51. REPLACED NUMBER 4 BRAKE ASSEMBLY AS PER AMM 32-42-71. REPLACED NUMBER 4 WHEEL ASSEMBLY (AALA202109200856) AS PER WORK CARD 26L70032008. REPLACED NUMBER 3 BRAKE ASSEMBLY (AALA202109203154) PER WORK CARD 26L70032008.