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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-029
General
There are many switches, knobs, and push-buttons on the MCP
that the crew uses to control the FCC. There are also many
displays to show selected parameter values.
Course Selectors
The course selectors 1 and 2 select the instrument landing
system (ILS) course or the VHF omnidirectional range (VOR)
course . Course selector 1 is for the captain ILS or VOR system.
Course selector 2 is for the first officer (F/O) ILS or VOR system.
Course Displays
The two course displays show the VOR or ILS course you
select. The display range is from 000 to 359 degrees.
Flight Director (F/D) Switches
Two F/D switches turn on and turn off the F/D function in the
FCCs. The captain F/D switch usually controls FCC A and you
usually only see the F/D commands on the captain display. The
F/O F/D switch usually controls FCC B and you usually only see
the F/D commands on the F/O display.
Master Lights (2)
The master light shows which FCC controls the mode selection.
If the master light above the captain F/D switch is on, FCC A
controls the mode selection. If the master light above the F/O F/
D switch is on, FCC B controls the mode selection.
Autothrottle (A/T) Arm Switch
When you put the switch to the ARM position, the A/T system
arms. An electrical solenoid holds the switch in the ARM
position. You disconnect the A/T if you put the switch to the OFF
position.
A/T Arm Light
The light comes on when the A/T is in the arm mode.
IAS/MACH Selector
The IAS/MACH selector sets the MCP airspeed or mach.
IAS/MACH Display
The display shows indicated airspeed (IAS) or the mach
number. The IAS shows from 100 to 399 kts in one knot
increments. The mach shows from 0.60 to 0.89 mach in 0.01
mach increments.
The display has a warning flag that flashes for underspeed and
overspeed conditions. The left position in the LCD shows this
flag.
The IAS/MACH display is blank when the VNAV mode is active.
DFCS - MODE CONTROL PANEL - CONTROLS AND DISPLAYS
EFFECTIVITY
SHZ ALL 22-11-00
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-030
IAS/MACH Change/Over Switch
When you push this switch and the airspeed is more than mach
0.6, it changes the display from IAS in knots to mach or from
mach to IAS in knots. If the airspeed is less than mach 0.6, the
display will only show knots and the change over switch does
not do anything.
Heading Selector
The heading selector changes the flight crew selected heading
for the airplane.
Heading Display
The display shows the heading the flight crew selects. The
display range is from 000 to 359 degrees.
Bank Angle Selector
The bank angle selector lets the flight crew set the maximum
allowable bank angle. You can set the maximum bank angle to
one of these angles:
* 10 degrees
* 15 degrees
* 20 degrees
* 25 degrees
* 30 degrees.
This variable bank angle only has an effect in the VOR and
heading select modes.
Altitude Selector
The altitude selector sets the reference altitude for the DFCS.
One revolution of the knob changes the altitude 6400 feet.
Altitude Display
This display shows the altitude the flight crew selects. The
altitude range is from 0 to 50,000 feet.
Vertical Speed Thumbwheel
To set the vertical speed, turn the vertical speed thumbwheel.
Turn the thumbwheel UP to make a nose up change in the
value. Turn the thumbwheel DN to make a nose down change in
the value. The thumbwheel has increments of 50 feet per minute
(fpm) from 0 to 1000 fpm and 100 fpm for more than 1000 fpm.
Vertical Speed Display
This display shows the flight crew selected vertical speed. The
vertical speed range is from -7,900 fpm to +6,000 fpm.
Autopilot (A/P) Engage Switches
There are four A/P engage switches. Two switches are for FCC
A and two are for FCC B. The switches engage an autopilot to
command (CMD) or control wheel steering (CWS).
DFCS - MODE CONTROL PANEL - CONTROLS AND DISPLAYS
EFFECTIVITY
SHZ ALL 22-11-00
Page 83
D633A101-SHZ1 Jun 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-030
The switches are push-button/light type switches. If the preengage
　
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