- FMC DISAGREE Message:
Notes:
- The FMC DISAGREE message shows when there
is a data miscompare between the two Flight
Management Computers (FMCs) in approach or on
the ground. The message is amber in color.
- If both the UNABLE REQD NAV PERF - RNP and
FMC DISAGREE messages are active at the same
time, they will show on two independent lines on the
display.
FMC DISAGREE Possible Causes:Before replacing any component perform FMCS Bite (Maint/FMCS/INFLT Faults).-Toggle FMC & control panel switch.
1.Flight Management Computer (FMC)
2.Toggle the FMC selector to BOTH on 1 then BOTH on 2, back to NORMAL.
3.Wiring
FMC DISAGREE Message:
Circuit Breakers:FMCS CMPTR #1: P18-2 = E8 & A6.
FMCS CMPTR #2: P6-1 = D16.
Applicable deferrals MEL 34-36 Flight Management Computer System
- The FMC DISAGREE message shows when there
is a data miscompare between the two Flight
Management Computers (FMCs) in approach or on
the ground. The message is amber in color.