Service difficulty report · Computer · Boeing 767322

Difficulty date
September 17, 2023
Submitted
September 22, 2023
Operation
Air carrier
Aircraft
N644UA
Make and model
Boeing 767322
Aircraft serial
25094
Aircraft time
123,599 hours, 19,175 cycles
Part
Computer
Part number
937E205G3
Part serial
82C0072
Condition
Failed
Location
Sta 328
Part time
712,895 hours, 701,853 cycles
Stage of operation
TO
How discovered
O
Nature of condition
O
Precautionary procedure
C

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

What was found

AUTO THROTTLE WOULD NOT ENGAGE ON TAKEOFF ROLL. PICTURE FROM INSTALLED TMS ADDED. PERFORMED FIM 22-02 TASK 801. PERFORMED TMS SYSTEM TEST, TMS OPS TEST AND MCDP GROUND TEST 52 AS PER AMM 22-32-00. TMS COMPUTER FAILED. THRUST MANAGEMENT COMPUTER REPLACED PER AMM 22-31-01, INSTALLATION TEST PASSED. A/C DOWNGRADED TO "NO AUTOLAND" IN LOG 5779127.