737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
Controls and Indicators
11.10.2
MN-FLT-OH-201
2
Line Select Keys
Push –
• moves data from scratchpad to selected line
• moves data from selected line to scratchpad
• selects page, procedure, or performance mode as applicable
• deletes data from selected line when DELETE is shown in scratchpad.
3
Brightness Control
Rocker switch (plus or minus) - controls display brightness.
4
Message (MSG) Light
Illuminated (white) – scratchpad message is shown.
5
Offset (OFST) Light
Illuminated (white) – LNAV gives guidance for lateral route offset.
6
FAIL Light
Illuminated (amber) for test purposes only. The MCDU FAIL lamp will not
illuminate for an FMC failure.
7
CALL Light
Illuminated (white) – a subsystem other than the FMC is requesting control of the
CDU.
Function and Execute Keys
1
CDU Function Keys
Push –
• INIT REF – shows page for data initialization or for reference data
• RTE – shows page to input or change origin, destination, or route
REF
INIT
RTE
LEGS
FMC
ATC
HOLD
VNAV
PROG
FIX
PAGE
PREV
NEXT
PAGE
COMM
EXEC
MENU
N1
LIMIT
DEP
ARR
LCD FANS MCDU
1
3
2
March 1, 2021