Boeing 737 - FMC DISAGREE - VERTICAL

737 Flight Crew Operations Manual
11.2
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-4Q8-SJA
11.2
MSG and FMC - FMC DISAGREE - VER TICALFMC and MSG - FMC DISAGREE - VER TICALFMC - FMC DISAGREE - VERTICALFMC DISAGREE - VERTICAL
PQ976, PT813, PT826, PT830, PT831
1 Do not move the FMC source select switch.
The FMC will attempt to correct the difference
without crew action.
2 Monitor crossing altitudes to ensure compliance.
■ ■ ■ ■
The disagreement will most likely be corrected when
crossing a waypoint with an altitude constraint.
If the disagreement remains when entering the
approach phase, the FMC DISAGREE - VERTICAL
message will be replaced with the FMC DISAGREE
message. An approach with an RNP alerting
requirement is not authorized when the FMC
DISAGREE message is shown.
M
S
G
FMC DISAGREE - VERTICAL
FMC
P/RST
Condition:
One of the following occur:
•Left FMC and right FMC target airspeeds
disagree during descent
•Left FMC and right FMC vertical paths
disagree during descent.
Additional Information
March 24, 2017