What was found
ON LAND WITHOUT AUTOBRAKES ARMED, MAX BRAKES WERE APPLIED BY AUTOBRAKE SYSTEM. BRAKE APPLIED, GREEN STRIP IN MAX. AUTOBRAKES SWITCH WAS CYCLING ON & OFF. TOE BRAKES USED TO RELEASE BRAKES. REMOVED AND REPLACED AUTOBRAKE SYS CONTROL UNIT AMM 32-42-72-4. REMOVED AND REPLACED AUTOBRAKE MAX ON-OFF SWITCH AMM 33-10-00-4. OPS CK.