Service difficulty report · Computer · Boeing 767322

Difficulty date
August 25, 2015
Submitted
August 28, 2015
Operation
Air carrier
Aircraft
N674UA
Make and model
Boeing 767322
Aircraft serial
29242
Aircraft time
53,764 hours, 12,391 cycles
Engine
Pwa PW4056
Part
Computer
Condition
Malfunctioned
Location
Autopilot Sys
Stage of operation
NR
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

AT F340 LEVEL OFF SELECTED, VNAV & AUTO PILOT ABRUPTLY NOSED DOWNWARD. RT FCC FAULTED IAW FIM FAULT TREE. R & R RT FCC, LOAD SW, OPERATIONS CHECKED GOOD.