737 MAX Flight Crew Operations Manual
Flight Instruments, Displays -
MAX Display System - System
Description
MN-FLT-OH-201
10.20.5
Display Unit Failure Automatic Switching
Outboard Display Unit Failure
1
Outboard Display Unit Fails
The window management function in MDS places the various display formats on
the proper display units. It ensures that each pilot has a PFD, and that an Engine
display is shown.
DU failures may be dealt with automatically or manually. When an outboard DU
failure is sensed, the displays will automatically reconfigure. The MFD display
adjacent to the failed DU is replaced by a reduced size PFD. The left and right
edges of the PFD are cropped and the AUX display is removed from the side of
the PFD. A condensed version of the AUX display is placed at the top of the PFD.
This allows the half-sized PFD display to fit. No information on the PFD is lost
with the half-sized display.
2
Both Outboard Display Units Fails
In the event that both outboard DUs fail, both inboard DUs will have the reduced
size PFD as shown. If the failure is not detected, pilots can achieve the same
reconfiguration pattern manually by switching the PFD/MFD selector to the
INDB position.
1
AUX
PFD
ND
ENG
PFD
AUX
PFD
ENG
PFD
MFD
PFD/MFD
OUTBD
INBD
NORM
PFD/MFD
OUTBD
INBD
NORM
COMPASS
MFD
COMPASS
AUX
COMPASS
AUX
COMPASS
2
March 1, 2021
