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D6-30151-425 9.10.9
Normal Flap Position Indication
Displays combined leading and trailing edge flap positions when all surfaces are
operating normally and control is in the primary (hydraulic) mode. The indicator
shows continuous motion.
Indication is no longer displayed 10 seconds after flap retraction.
1 Flap Position (white)
UP – all leading and trailing edge flaps retracted.
Between UP and 1 -
• inboard or midspan leading edge flap groups in transit
• all trailing edge flaps retracted
1 –
• inboard and midspan leading edge flap groups extended
• all trailing edge flaps retracted
Between 1 and 30 – actual position of slowest trailing edge flap group.
2 Flap Lever Position (line and number)
Magenta – flaps in transit to position selected by Flap lever.
Green – flaps in selected position.
F
L
A
P
S 20
EICAS DISPLAY
1
2
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
9.10.10 D6-30151-425
Flight Controls -
Controls and Indicators
Secondary Mode Expanded Flap Position Indication
If any flap position is non–normal or if flap control is in secondary mode, all flap
positions are displayed.
Indicator motion is continuous between flap detents.
1 Leading Edge Flap Up Indication
White - leading edge flap group up.
Amber - leading edge flap group disagrees with Flap lever position.
2 Inoperative Sensor (amber)
Position sensor for related leading edge flap has failed.
3 Leading Edge Flap Down Indication
Green - leading edge flap groupdown.
Amber - leading edge flap group disagrees with Flap lever position.
4 Leading Edge Flap In Transit Indication
White - leading edge flap group in transit.
Amber - leading edge flap group in transit after normal in-transit time.
5 Flap Lever Position (line and number)
Magenta – flaps in transit to position selected by Flap lever.
F
L
A
P
S
5
EICAS DISPLAY
4
6
1 3
2 5
7
April 01, 2001
747 Operations Manual
Flight Controls -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D6-30151-425 9.10.11
Green – all leading and trailing edge flaps in position selected by Flap lever.
6 Trailing Edge Flaps Indication
White - position of inboard and outboard trailing edge flaps.
Amber - asymmetry or drive failure has occured in related group.
7 Inoperative Sensor (amber)
Position sensor for related trailing edge flap has failed.
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
9.10.12 D6-30151-425
Flight Controls -
Controls and Indicators
Alternate Mode Expanded Flap Position Indication
If alternate flaps armed, expands to display all flap positions.
Indicator motion is continuous between flap detents.
1 Leading Edge Flap Indication
Position of leading edge flap groups.
2 Trailing Edge Flap Indication
Position of inboard and outboard trailing flaps.
3 Flap Position Index Marks
Reference flaps 5 and 25 positions.
Surface Position Indication
The surface position indication is displayed by pushing the STAT synoptic display
switch on the display select panel. Display select panel operation is described in
Chapter 10, Flight Instruments, Displays.
Full pointer deflection indicates full control surface displacement.
25 25
5 5
F
L
A
P
S
EICAS DISPLAY
3
1
2
April 01, 2001
747 Operations Manual
Flight Controls -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D6-30151-425 9.10.13
Surface Position Indication
1 Rudder Position
Indicates upper and lower rudder positions.
2 Elevator Position
Indicates left and right outboard elevator positions.
3 Aileron Position
Indicates inboard and outboard aileron positions.
4 Spoiler Position
• indicates flight spoiler positions
• indicates in-flight speedbrake position on left wing only
RUD
AIL ELEV
SPL SPL
AIL
1
3
2 4
SECONDARY
EICAS DISPLAY
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
9.10.14 D6-30151-425
Flight Controls -
Controls and Indicators
Flight Control Hydraulic Power Controls
1 Flight Control Shutoff Switches
NORM – supplies hydraulic power for flight control surfaces.
　
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