737 MAX Flight Crew Operations Manual
Flight Instruments, Displays -
MAX Display System - Displays
MN-FLT-OH-201
10.10.39
15
Attitude Flag (amber)
The attitude display has failed.
16
Landing Altitude Flag (amber)
The landing altitude input is not available or invalid.
1B401, 1B402, 1B801 - 1B824
17
Angle of Attack (amber)
The AOA signal has failed or is invalid when ground speed is greater than 80
knots.
PFD Annunciations and Alerts
Angle of Attack (AOA) Disagree Alert
1
AOA DISAGREE Alert (amber)
Indicates the Captain’s (left) and First Officer’s (right) AOA values disagree by
greater than 10 degrees for more than 10 seconds. The alert is shown on both PFDs
and does not indicate which AOA value is erroneous.
The AOA DISAGREE alert logic is active when the airplane is above 400 feet
RA.
NOTE: If the AOA DISAGREE alert is shown when descending through 400 feet
RA, the alert remains until landing.
AOA
DISAGREE
BARO
200
30.00
1
March 1, 2021