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position, and V2
• 5, 10, 15, 20, or 25 – selected value is maximum, regardless of airspeed
Mode Control Panel (MCP)
SEL
5
AUTO
BANK
LIMIT
HDG
25
HOLD
1
3
2
4
5
6
December 01, 1999
747 Operations Manual
Automatic Flight -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D6-30151-425 4.10.9
5 Heading (HDG) HOLD Switch
Push -
• selects HDG HOLD roll mode
• HDG HOLD roll mode displays in green (active) on PFD roll flight mode
annunciation
• AFDS rolls wings level, then holds present heading
6 Heading Hold Light
Illuminated – HDG HOLD roll mode active.
Autopilot Flight Director Vertical Speed (V/S) Controls
1 Vertical Speed (VERT SPD) Window
Blank when vertical speed (V/S) pitch mode not selected.
Displays current V/S when V/S pitch mode selected.
Displays selected V/S in 100 fpm increments.
Display range is -8000 to +6000 fpm.
Vertical speed displays on the PFD V/S indication.
2 Vertical Speed (V/S) Selector
UP or Down (DN) - sets V/S in VERT SPD window and on both PFDs.
Mode Control Panel (MCP)
V/S
UP
DN
VERT SPD
2
3
4
1
December 01, 1999
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
4.10.10 D6-30151-425
Automatic Flight -
Controls and Indicators
3 Vertical Speed (V/S) Switch
Push –
• selects V/S pitch mode
• V/S pitch mode displays in green (active) on PFD pitch flight mode
annunciation
• displays current V/S in V/S window
• AFDS pitch maintains V/S displayed in the V/S window. When selected
altitude reached, pitch flight mode annunciation changes to ALT
• A/T operates in speed (SPD) mode, if armed
4 Vertical Speed (V/S) Light
Illuminated – vertical speed pitch mode is active.
Autopilot Flight Director Altitude Controls
1 Altitude Window
Displays selected altitude in 100 feet increments. Display range is 0 to 50000 feet.
Displays selected altitude on PFDs.
Displayed altitude is reference altitude for altitude alerting and level off.
ALT window and PFD altitudes set to 10000 feet when power first applied.
2 Altitude Selector
Rotate – sets altitude in ALT window and selected altitude on both PFDs.
Mode Control Panel (MCP)
HOLD
ALT
3
1
2
4
April 1, 2000
747 Operations Manual
Automatic Flight -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D6-30151-425 4.10.11
Push –
• during climb or descent with altitude constraints, each push deletes the
next waypoint constraint between the airplane altitude and the altitude
window setting
• during climb with no altitude constraints, and the altitude window set
above the FMC cruise altitude, changes cruise altitude to the altitude
window value
• during cruise:
• with the altitude window set above or below FMC cruise altitude,
resets the FMC cruise altitude to the altitude window altitude
• when in VNAV PTH or VNAV ALT pitch mode, initiates a climb or
descent toward the altitude window altitude
• within 50 NM of the top–of–descent (T/D) point, with the altitude
window set below cruise altitude, initiates a reduced rate descent
3 Altitude HOLD Switch
Push –
• selects altitude (ALT) pitch mode
• ALT pitch mode displays in green (active) on PFD pitch mode
annunciation
• AFDS commands pitch to maintain the altitude when the switch was
pushed
4 Altitude Hold Light
Illuminated – altitude hold mode active.
Autopilot Flight Director Approach Mode Controls
Mode Control Panel (MCP)
APP
1 LOC
2
3
4
December 01, 1999
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
4.10.12 D6-30151-425
Automatic Flight -
Controls and Indicators
1 Localizer (LOC) Switch
Push –
• arms, disarms, captures localizer (LOC) as roll mode
• displays LOC in white (armed) on both PFD roll flight mode
annunciations before localizer capture; current roll mode remains active
until LOC capture
• displays LOC in green (active) on PFD roll flight mode annunciations
after localizer capture
• arms AFDS to capture and track inbound on front course
• capture point varies based on range and intercept angle
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波音747-441操作手册1(94)
