SDR IPXA2025062264991

Service difficulty report · Fmc · Boeing 76734AF

Difficulty date: June 22, 2025
Submitted: June 23, 2025
Operation: Air carrier
Aircraft: N342UP
Make and model: Boeing 76734AF
Aircraft serial: 37865
Aircraft time: 33,566 hours, 12,524 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Part number: 4052506955
Part serial: 9905F142
Condition: Faulted
Location: Zone 200
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

ATB FMC LOCKED UP WITH STBY ONE MSG PRESENT (FULL WRITEUP IN FAULT DESCRIPTION). + PERFORMED TROUBLE SHOOTING REF B767 FIM 34-61 FAULT TREE 854,NO FAULTS FOUND.REMOVED AND REPLACED L/H FMC REFB767AMM 34-61-01 9 (PRECAUTIONARY) OPS CHECK GOOD ATT.

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