AILERON
PROGRAMMER
QUADRANT

CLC CONTROL ROD
CLC
CONTROL ROD
RIGHT CENTRAL LATERAL CONTROL PACKAGE (RIGHT AUTOPILOT)
H
INPUT CRANK
(REF)

LEFT OR RIGHT AILERON PROGRAMMER
G
Ailerons - Component Location (Details from Sht 2) Figure 102 (Sheet 3)
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A
747-400 FAULT ISOLATION/MAINT MANUAL
OUTBOARD AILERON OUTBOARD AILER0N POWER CONTROL PACKAGE AND LOCKOUT MECHANISM
SEE IINBOARD AILERON
INBOARD AILERON 
LEFT WING SHOWN  POWER CONTROL PACKAGE 
RIGHT WING OPPOSITE  SEE  J 
TORQUE 
OUTBOARD AILERON  DRIVE 
POWER CONTROL  LINKAGE (REF) 
PACKAGE ACTUATOR 
L OR R OUTBOARD 
AILERON LOCKOUT 
ACTUATOR, X452 OR X453 
OUTBOARD 
AILERON 
QUADRANT 

OUTBOARD OUTPUTAILERON
LINKAGE (REF) POWER CONTROL INBOARD AILERON
PACKAGE INPUT  OUTBOARD QUADRANT
LINKAGE (REF)  AILERON LOCKOUT
TORQUE DRIVE MECHANISM
LINKAGE (REF)
OUTBOARD AILERON CONTROL PACKAGE AND LOCKOUT MECHANISM
I
INBOARD POWER CONTROL PACKAGE ACTUATOR
INBOARD AILERON
WING STRUCTURE (REF)
INBOARD AILERON POWER CONTROL PACKAGE
J
Ailerons - Component Location Figure 102 (Sheet 4)
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A
747-400 FAULT ISOLATION/MAINT MANUAL

(RIGHT WING OPPOSITE)

HYDRAULIC LINES (REF)
AILERON & SPOILER
HYDRAULIC SHUTOFF VALVE
V140 (SYSTEM 1)
V141 (SYSTEM 2)
V145 (SYSTEM 3)
V149 (SYSTEM 4)

Ailerons - Component Location

Figure 102 (Sheet 5)

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A 747-400 FAULT ISOLATION/MAINT MANUAL 
INBOARD AILERON POSITION TRANSMITTER  POSITION TRANSMITTER OUTBOARD AILERON MSEE
SEE  L 
673AB 573AB PANEL ACCESS  673BB 573BB PANEL ACCESS  691AB 591AB PANEL ACCESS  691BB 591BB PANEL ACCESS 691CB 591CB PANEL ACCESS  691DB 591DB PANEL ACCESS 691EB 591EB PANEL ACCESS 691FB 591FB PANEL ACCESS 
LEFT WING SHOWN 
(RIGHT WING OPPOSITE) 
INBOARD AILERON CONTROL ROD (REF)  L OR R INBOARD TRANSMITTER, AILERON POSITION T1670 OR T1671  ROD (REF) CONTROL  AILERON OUTBOARD 

L OR R OUTBOARD 
(REF) STRUCTURE WING  WING STRUCTURE (REF)  AILERON POSITION TRANSMITTER, T488 OR T489 
INBOARD AILERON POSITION TRANSMITTER  OUTBOARD AILERON POSITION TRANSMITTER 
L  M 

Ailerons - Component Location
Figure 102 (Sheet 6)

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747-400 MAINTENANCE MANUAL
 AILERON AND AILERON TRIM CONTROL SYSTEM - DESCRIPTION AND OPERATION
___________________________________________________________________
 1.  General_______
 A.  Two ailerons in each wing operating with the spoilers provide lateral control of the airplane. The ailerons are hydraulically powered with the control system utilizing all four airplane hydraulic supply systems. The inboard ailerons are operable at any airspeed; the outboard ailerons are used exclusively during low speed flight. Extension of the trailing edge (TE) flaps activates the outboard ailerons.
　
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