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Roll Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.7
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
9.TOC.0.2 D6-30151-425
Flight Controls -
Table of Contents
Aileron and Spoiler Roll Control . . . . . . . . . . . . . . . . . . . . . 9.20.7
Aileron Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.7
Aileron Control Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.8
Yaw Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.9
Rudder Control and Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.9
Rudder Control Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.10
Spoilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.10
Speedbrakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.11
Ground Spoilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.11
Spoiler Control Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.12
Flaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.13
Flap Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.13
Flap Sequencing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.14
Flap Load Relief. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.14
Flap Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.20.14
Leading Edge Flaps Control Diagram . . . . . . . . . . . . . . . . . 9.20.15
Trailing Edge Flaps Control Diagram . . . . . . . . . . . . . . . . . 9.20.16
EICASMessages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.30.1
Flight Controls EICASMessages . . . . . . . . . . . . . . . . . . . . . . . . 9.30.1
April 01, 2001
747 Operations Manual
Flight Controls Chapter 9
Controls and Indicators Section 10
Copyright © The Boeing Company. See title page for details.
D6-30151-425 9.10.1
Pitch and Stabilizer Trim Systems
ControlWheel and Column
1 Stabilizer Trim Switches
Spring–loaded to neutral.
Push (both switches) – trims stabilizer in desired direction.
2 Control Wheel
Rotate – deflects ailerons and spoilers in desired direction.
3 Control Column
Push/pull –
• deflects elevators in desired direction
• prevents stabilizer trim in opposite direction
3
1
2
October 1, 2000
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
9.10.2 D6-30151-425
Flight Controls -
Controls and Indicators
Stabilizer Trim Controls
1 Stabilizer (STAB) Trim Cut Out Switches
ON - supplies hydraulic power for stabilizer trim.
AUTO –
• supplies hydraulic power for stabilizer trim
• shuts off related system hydraulic power if unscheduled trim detected
CUT OUT - shuts off related hydraulic power to stabilizer trim.
N
T
L
A
N
T
L
A
APL NOSE DN
CUT OUT APL NOSE UP
2 - ON - 3
STAB TRIM
O
T
U
A
CONTROL STAND
1
2
6
8
10
12
4
APL
NOSE
DN
O
F
F
APL
UP
S
T
A
B
R
I
M
T
14
NOSE 15
2
0
3
4
April 01, 2001
747 Operations Manual
Flight Controls -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D6-30151-425 9.10.3
2 Alternate (ALTN) Stabilizer Trim Switches
Push (both switches) - trims stabilizer in desired direction using alternate control
channel.
3 Stabilizer Trim Indicator
• indicates stabilizer position in units of trim
• illuminated greenband indicates allowable range for takeoff
4 Stabilizer Trim Indicator Off Flag
In View - trim indicator inoperative.
Aileron and Rudder Trim Controls
AILERON TRIM
CONTROL WHEEL/COLUMN
10 5 0 5 10
NOSE LEFT UNITS NOSE RIGHT
RUDDER TRIM
R
UDDE
R RIGHT
NOSE
LEFT
NOSE
CENTER
CTR
AFT AISLE STAND
1
2
3
4
5
6
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
9.10.4 D6-30151-425
Flight Controls -
Controls and Indicators
　
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