As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLE TRIPPED OFF SHORTLY AFTER TOGA SELECTED ON TAKEOFF. NR 2 RT THRUST LEVER AHEAD OF LT AT TIME OF EVENT. WOULD NOT STAY ARMED WHEN RESELECTED IN FLIGHT. DUPLICATED DEFECT ON GROUND VERIFICATION, FOUND ASM NR 1 HARD FAIL. REPLACED NR 1 ASM REF MM22-31-91, OPS TEST NORMAL, AND SERVO MOTOR TEST NORMAL.