737 MAX Flight Crew Operations Manual
Automatic Flight -
System Description
4.20.2
MN-FLT-OH-201
Autopilot Engagement Criteria
Each A/P can be engaged by pushing a separate CMD or CWS engage switch. A/P
engagement in CMD or CWS is inhibited unless both of the following
pilot–controlled conditions are met:
• no force is being applied to the control wheel
• both the STAB TRIM PRI and STAB TRIM B/U cutout switches are in
the NORMAL position.
Only one A/P can be engaged at a given time unless the approach (APP) mode is
engaged. Approach mode allows both A/Ps to be engaged at the same time. Dual
A/P operation provides control through landing flare and touchdown or an
automatic go–around.
In single A/P operation, full automatic flare and touchdown capability and A/P
go–around capability are not available.
Autopilot Disengagement
The A/P automatically disengages when any of the following occurs:
• pushing either A/P disengage switch
• column or wheel force override
• pushing either Takeoff/Go-around (TO/GA) switch with a single A/P
engaged in CWS or CMD;
•below 2000 feet RA, or
•with flaps not up, or
•G/S engaged.
• pushing either Takeoff/Go-around (TO/GA) switch with a single A/P
engaged in CWS or CMD above 2000 feet RA with flaps not up or G/S
engaged
• one second after activation of stick shaker if autopilot is engaged in
ALT HOLD, VNAV ALT (as installed), VNAV PTH (in a level
segment), VNAV PTH (flaps 15 or greater), V/S (flaps 15 or greater),
G/P (as installed) or G/S (single channel only) modes. Refer to the
Flight Director Display in this section for effects on flight director
commands
• five minutes after continuous activation of stick shaker if not in any of
the above modes
• five minutes after continuous stick shaker activation if the autopilot was
re-engaged
1B785, 1J585 - 1J594
• pushing either TO/GA switch after touchdown with both A/Ps engaged
in CMD (except with LAND 3 or LAND 2 annunciated)
• pushing an illuminated A/P ENGAGE switch
• pushing the A/P DISENGAGE bar down
March 1, 2021
