737 MAX Flight Crew Operations Manual
Automatic Flight -
Controls and Indicators
MN-FLT-OH-201
4.10.5
Climb –
• autothrottle holds FMC thrust limit
• AFDS holds FMC target speed
• automatic level-off occurs at MCP altitude or VNAV altitude,
whichever is reached first
•MCP constrained altitude annunciates VNAV ALT
•VNAV constrained altitude annunciates VNAV PTH.
Cruise –
• autothrottle holds FMC target speed
• AFDS holds FMC altitude
• selecting a lower MCP altitude arms FMC to automatically begin
descent upon arrival at FMC top of descent point.
Descent –
• VNAV SPD descent
•autothrottle holds idle
•AFDS holds FMC target speed.
• VNAV PTH descent
•autothrottle holds idle but can command FMC SPD mode if ground
speed becomes too low to maintain FMC vertical path
•AFDS tracks FMC descent path.
• automatic level-off occurs at MCP altitude or VNAV altitude,
whichever is reached first
•MCP constrained altitude annunciates VNAV ALT
•VNAV constrained altitude annunciates VNAV PTH.
Inhibited below 400 ft RA or if performance initialization not complete.
VNAV mode is terminated by any one of the following:
• selecting another pitch mode
• glideslope capture
• reaching end of LNAV route
• transition of glideslope intercept waypoint if G/S is armed
• crosstrack deviation exceeds twice the RNP value during PTH descent
for an active leg with a database vertical angle and LNAV not engaged.
In the event of glideslope intercept waypoint transition, VNAV can be re-engaged.
March 1, 2021