Service difficulty report · Amu · Boeing 767424ER

Difficulty date
November 12, 2023
Submitted
November 15, 2023
Operation
Air carrier
Aircraft
N67058
Make and model
Boeing 767424ER
Aircraft serial
29453
Aircraft time
81,740 hours, 11,448 cycles
Part
Amu
Part number
5700112
Part serial
670
Condition
Power Loss
Location
Sta 434, E4 Rack
Part time
66,403 hours, 10,230 cycles
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

LOST POWER TO ALL 3 RADIO CONTROL PANELS, NO COMMS IN REF TO TOMC LOCKED LOGPAGE 6273058: FOUND AUDIO MANAGMENT UNIT LOOSE IN RACK. PULLED AMU AND INSPECTED UNIT AND RACK AND FOUND NO DEFECTS NOTED. REINSTALLED AMU, CLOSED BREAKERS. ALL POWER RETURNED AND TEST CALL SAT TO TOWER. PER AMM 23-51-05 UPDATE WITH PICTURE OF UNSERCURE AMU . REPLACE AMU AT THE REQUEST OF TOMC REF LOGS 6274081 AND 6273058 . REMOVED AND REPLACED AMU, OPS CK GOOD NO FURTHER DEFECTS NOTED AT THIS TIME PER AMM 23-51-05. OVERWEIGHT LANDING WEIGHT 361.000 300FPM TOUCHDOWN COMPLIED WITH PHASE 1A AND 1B OVERWEIGHT LANDIND INSPECTIONS, NO DEFECTS NOTED PER AMM 05-51-01. THE TOMC CONTROLLER AND SENIOR MANAGER CONCUR THAT THE AIRCRAFT CAN BE RELEASED BACK TO SERVICE AFTER EXPERIENCING A DIVERSION OR AIR TURN BACK DUE TO A MECHANICAL REASON.