.
autopilot disengages if engaged.

Stabilizer Trim Main Electric (MAIN ELECT) Cutout Switch
NORMAL – normal operating position.
CUTOUT – deactivates stabilizer trim switch operation.

Stabilizer Trim AUTOPILOT Cutout Switch
NORMAL – normal operating position. CUTOUT –
.
deactivates autopilot stabilizer trim operation

.
autopilot disengages if engaged.

Stabilizer Trim Override Switch
OVERRIDE – bypasses the control column actuated stabilizer trim cutout switches to restore power to the Stabilizer Trim Switches
NORM (guarded position) – normal operating position.

Stabilizer Out of Trim (STAB OUT OF TRIM) Light
Refer to Chapter 4 – Automatic Flight
Copyright . The Boeing Company. See title page for details.
Flight Controls -Controls and Indicators
Rudder
737 Flight Crew Operations Manual
1
RUDDER TRIM
15105 0 510 15 OFF
2
3
LEFTUNITS RIGHT
NOSE LEFT
NOSE
CREW STATION
RIGHTR
U
D
4
D
E
R
5
AFT ELECTRONIC PANEL
CENTER FORWARD
PANEL

1 Rudder Pedals
Push –
.
controls rudder position

.
permits limited nose gear steering up to 7 degrees each side of center.

2 Rudder Trim Indicator
Indicates units of rudder trim.
3 Rudder Trim OFF Flag
Illuminated (amber) (in view) – rudder trim indicator is inoperative.
4 Rudder Trim Control (spring-loaded to neutral)
Rotate – electrically trims the rudder in the desired direction.
5 YAW DAMPER Indicator
.
Indicates main yaw damper movement of rudder

.
pilot rudder pedal inputs are not indicated.

Copyright . The Boeing Company. See title page for details.
9.10.8  September 26, 2003

Flight Controls -Controls and Indicators
Aileron / Elevator / Flight Spoilers

AILERON TRIM Indicator
Indicates units of aileron trim.

AILERON Trim Switches (spring-loaded to the neutral position)
Movement of both switches repositions the aileron neutral control position.

Control Wheel
Rotate – operates ailerons and flight spoilers in desired direction.

Control Column
Push/Pull – . operates elevators in the desired direction
. movement opposing stabilizer trim stops electric trimming.
Copyright . The Boeing Company. See title page for details.
Flight Controls -Controls and Indicators

Speed Brakes

 SPEED BRAKE Lever
DOWN (detent) – all flight and ground spoiler panels in faired position.
ARMED –

.
automatic speed brake system armed

.
upon touchdown, the SPEED BRAKE lever moves to the UP position,

and all flight and ground spoilers extend. FLIGHT DETENT – all flight spoilers are extended to their maximum position for inflight use.
UP – all flight and ground spoilers are extended to their maximum position for ground use.

SPEED BRAKE ARMED Light
Light deactivated when SPEED BRAKE lever is in the DOWN position.
Illuminated (green) – indicates valid automatic speed brake system inputs.

SPEED BRAKE DO NOT ARM Light
Light deactivated when SPEED BRAKE lever is in the DOWN position.
Copyright . The Boeing Company. See title page for details.
9.10.10  September 26, 2003

Flight Controls -Controls and Indicators 737 Flight Crew Operations Manual
Illuminated (amber) –
.  indicates abnormal condition or test inputs to the automatic speed brake system

SPEEDBRAKES EXTENDED Light
Illuminated (amber) –
.
in–flight -

.
SPEED BRAKE lever is beyond the ARMED position, and

.
TE flaps extended more than flaps 10, or

.
radio altitude less than 800 feet
. on the ground -

.
SPEED BRAKE lever is in the DOWN detent,

.
ground spoilers are not stowed.

Note:  On the ground, the SPEEDBRAKES EXTENDED light does not illuminate when hydraulic system A pressure is less than 750 psi.
Copyright . The Boeing Company. See title page for details.
Flight Controls -Controls and Indicators 737 Flight Crew Operations Manual

Trailing Edge Flaps
YA613 - YA809

Copyright . The Boeing Company. See title page for details.
9.10.12  September 26, 2003

Flight Controls -Controls and Indicators 737 Flight Crew Operations Manual
YC153, YC154, YD651 - YK104