737 MAX Flight Crew Operations Manual
Flight Controls -
Controls and Indicators
9.10.6
MN-FLT-OH-201
4
Main Electric Stabilizer Trim Switches (spring-loaded to neutral)
Push (both) –
• electrically commands stabilizer trim in desired direction
• autopilot disengages if engaged
• overrides Speed Trim System (Speed Trim function and MCAS
function) if active.
5
Stabilizer Trim PRI (primary) Cutout switch
NORMAL – normal operating position
CUTOUT – stops stabilizer trim inputs from main electric, autopilot and Speed
Trim System (Speed Trim function and MCAS function).
6
Stabilizer Trim B/U (backup) Cutout switch
NORMAL – normal operating position.
CUTOUT – stops stabilizer trim inputs from main electric, autopilot and Speed
Trim System (Speed Trim function and MCAS function).
7
Stabilizer Trim Override Switch
OVRD – bypasses the control column actuated stabilizer trim cutout switches to
restore power to the Stabilizer Trim Switches
NORM (guarded position) – normal operating position.
8
Stabilizer Out of Trim (STAB OUT OF TRIM) Light
Refer to Chapter 4 – Automatic Flight
March 1, 2021