Service difficulty report · Servo · Boeing 767322

Difficulty date
October 11, 2023
Submitted
October 13, 2023
Operation
Air carrier
Aircraft
N677UA
Make and model
Boeing 767322
Aircraft serial
30029
Aircraft time
78,422 hours, 15,315 cycles
Part
Servo
Part number
P76200A
Part serial
A0351
Condition
Faulty
Location
Autothrottle
Part time
778,415 hours, 715,313 cycles
Stage of operation
TO
How discovered
O
Nature of condition
J, O
Precautionary procedure
C

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

What was found

RTO AT 10KTS DUE TO AUTOTHROT DISC EICAS TOMC LOCKS LOG FOR REPEAT WRITEUP AND SECOND RTO IN 2 DAYS UNLOCK TO CLEAR PERFORMED MCDP TESTS 02, 10, 30, 52, & 60. ALL TESTS PASSED EXCEPT TEST 10, SHOWED TLA L FAIL-FWD AND TLA R FAIL-FWD. NEEDS FURTHER T/S. SERVO, AUTOTHRO OFF 75-2232-9-0001 0351 ON 64-2232-9-0001 1229 SERVO, AUTOTHRO OFF 75-2232-9-0001 0351 ON 0000 REMOVED AND REPLACED SERVOMOTOR GENERATOR PER AMM 22-32-01. PERFORMED MCDP TEST 10 SERVO A/T AND MCDP TEST 30 PER AMM 22-00-02. NO FAULTS. SYSTEM CHECKS OK. AIRCRAFT FULL CAT CAPABLE.