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737 MAX Flight Crew Operations Manual
Automatic Flight -
Controls and Indicators
4.10.4 MN-FLT-OH-201
8
Speed Intervention (SPD INTV) Switch
Push (when VNAV engaged) –
• IAS/MACH display alternately shows selected IAS/Mach and blanks
• when IAS/MACH display is unblanked, FMC speed intervention is
active, FMC target speed is displayed, and IAS/MACH Selector may be
used to set desired speed
• when IAS/MACH display is blank, FMC computed target speed is
active and displayed on the airspeed indicator.
Vertical Navigation
1
VNAV Switch
Push –
• VNAV switch light illuminates
• pitch mode annunciates VNAV SPD, VNAV PTH, or VNAV ALT
• A/T mode annunciates FMC SPD, N1, RETARD, or ARM
• IAS/MACH display blanks and airspeed cursors positioned to FMC
commanded airspeed.
VNAV Mode
The FMC commands AFDS pitch and autothrottle to fly vertical profile selected
on FMC CDUs. Profile includes climb, cruise, descent, speeds, and can also
include waypoint altitude constraints.
VNAV arm criteria on the ground:
• a valid flight plan has been entered
• performance data has been entered and executed
• both flight director switches have been turned on
• VNAV guidance becomes active at 400 feet AGL.
LVLCHG HDGSEL APP
VORLOC
ALTHLD V/S
V NAV
10
HEADING
L NAV
VERT SPEED
ALT
INTV
DN
UP
30
ALTITUDE
GLARESHIELD
1 2 4
10 6 8 7 9 5
3
March 1, 2021