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F/D Go-Around Active
The F/D go-around mode starts when the pilot pushes either
TO/GA switch and the airplane is below 2000 feet of radio
altitude. TO/GA shows on the FMA as the active mode for the
pitch mode. The roll mode annunciation is blank.
SHZ ALL; AIRPLANES WITH HONEYWELL FCC P/N 10-62038-7/
-8 AND OPS SOFTWARE P/N 10-62038-708
The F/D go-around mode can be engage above 2000 feet of
radio altitude if G/S(glide slope) is engaged or if the flaps are
down.
SHZ ALL
The pitch command is initially pitch up and then it changes to a
speed control that is referenced to the flap settings. If an engine
fails, the pitch command is a speed control that is referenced to
the MCP speed.
The roll command holds the present magnetic track of the
airplane over the ground.
In F/D go-around, the flight director display on the AIs
automatically comes on even if the flight director switches are
off. This is called the pop up mode. It occurs when all these
conditions are true:
* A flight director switch is off
* The radio altitude is less than 2000 feet
* The pilot pushes a TO/GA switch.
F/D Go-Around Exit
Below 400 feet, the DFCS stays in F/D go-around unless the pilot
sets the flight director switches to off. Above 400 feet, the pilot
can set another roll or pitch mode.
If the pilot changes the pitch mode first, the roll mode will
change to HDG SEL. If the pilot changes the roll mode first, the
pitch mode remains in the pitch G/A mode. In the example the
airplane changed from the pitch G/A mode to the altitude hold
mode.
DFCS - OPERATION - FLIGHT DIRECTOR GO-AROUND
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
22-11-00-100
DFCS - OPERATION - FLIGHT DIRECTOR GO-AROUND
DFCS - OPERATION - FLIGHT DIRECTOR GO-AROUND
EFFECTIVITY
SHZ ALL 22-11-00
Page 98.179
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-100
General
You can engage the autopilot in CMD or CWS and turn on the
flight directors while on the ground. You can activate some of
the modes while on the ground. You need hydraulic power to
engage the autopilot.
When on the ground, the magnetic heading replaces the
magnetic track so you can do several tests.
TO/GA and Flight Directors
The graphic shows what you see if you turn on the flight
directors (F/D) and push the TO/GA switch on the ground.
When you turn on the captain F/D switch the master annunciator
light above the switch turns on. The captain FMA shows FD.
Turn on the first officer F/D switch. The first officer FMA shows
FD.
When you push a TO/GA switch the first officer master
annunciator turns on. Both FMAs show these annunciations:
* TO/GA
* HDG SEL
* FD.
The F/D commands show on the AI. The pitch command is set to
-10 degrees and the roll command shows a command to turn to
the selected heading.
TO/GA and Autopilot
Engage A/P A in CMD. The CMD A light comes on on the
engage switch. The FMAs shows these annunciations:
* CMD
* CWS P
* CWS R.
Push the TO/GA switch and the A/P disengages. The red A/P
light on the ASAs flashes and the aural warning supplies a
wailer sound.
Training Information Point
If you turn on the hydraulic power, observe the following
warning.
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT
ARE CLEAR OF ALL CONTROL SURFACES
BEFORE YOU SUPPLY HYDRAULIC POWER.
AILERONS, RUDDER, ELEVATORS, FLAPS,
SPOILERS, LANDING GEAR, AND THRUST
REVERSERS CAN MOVE QUICKLY WHEN YOU
SUPPLY HYDRAULIC POWER. THIS CAN CAUSE
INJURY TO PERSONS OR DAMAGE TO
EQUIPMENT.
DFCS - OPERATION - GROUND OPERATIONS - TO/GA SWITCH
EFFECTIVITY
SHZ ALL 22-11-00
Page 98.180
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-101
DFCS - OPERATION - GROUND OPERATIONS - TO/GA SWITCH
DFCS - OPERATION - GROUND OPERATIONS - TO/GA SWITCH
EFFECTIVITY
SHZ ALL 22-11-00
Page 98.181
D633A101-SHZ1 Jun 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
22-11-00-101
General
You can push these roll mode selector switches on the MCP
and activate these modes when the airplane is on the ground
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