(a)  
Operate the aileron control wheel through a minimum of two full cycles.

 (b)  
Make sure the aileron operates correctly (Fig. 402).

 S 864-037
 (19)
 Do this task:  "Hydraulic System Depressurization" (Ref 29-11-00/201).

 (20)
 Do this task: "Electrical Power Removal" (Ref 24-22-00/201).

 (21)
 Install the seal panels on the lower wing surface.

 (22)
 Close the access panels on the lower wing surface.

 S 864-038
 S 414-039
 S 414-040
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747-400 MAINTENANCE MANUAL
 S 414-054
 (23) Install the access panel on the upper wing surface above the power control package.
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747-400 MAINTENANCE MANUAL
 OUTBOARD AILERON - INSPECTION/CHECK
___________________________________
 1.  General_______
 A.  This procedure contains the task to do the inspection/check of the outboard aileron.
 B.  The procedure does not include instructions for access, removal, or replacement of the component after inspection of worn areas. Refer to Outboard Aileron - Removal/Installation for instructions to do these tasks.
 TASK 27-11-02-206-001
 2.  Outboard Aileron Inspection/Check_________________________________
 A.  Standard Tools and Equipment
 (1)
Micrometer, to measure internally and externally

 B.  
References

 (1)
27-11-02/401, Outboard Aileron

 (2)
IPC 27-11-02 Fig. 1

 (3)
IPC 27-11-13 Fig. 2

 C.  
Access

 (1)  
Location Zone
 592 Outboard Aileron, LH
 692 Outboard Aileron, RH

 D.  
Procedure

 S 026-002
 (1)
Do this task: "Outboard Aileron Removal" (Ref 27-11-02/401).

 S 226-003

 (2)
Do a check of the outboard aileron (Fig. 601):

 (a)
Remove the parts to be examined.

 (b)
Use a micrometer to measure the dimensions of these parts.

 (c)
Compare the part dimensions to the limit dimensions.

 (d)
If the part dimension is out of tolerance, replace the part.

 (e)
Install all the parts removed to do the inspection/check.

 (3)
Do this task: "Outboard Aileron Installation" (Ref 27-11-02/401).

 S 426-004
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747-400
MAINTENANCE MANUAL

ACCESS PANEL 
(UPPER WING 
SURFACE) 
OUTBOARD AILERON 
POWER CONTROL PACKAGE 
WING FITTING 
OUTBOARD 
AILERON 
HINGE NO. 1  SEE  B 
SEE  C  HINGE NO. 2 
SEE  C 
HINGE NO. 3 
HINGE NO. 6 
SEE  C  HINGE NO. 4  SEE  C 
AND ACTUATOR 
SUPPORTS  HINGE NO. 5 
SEE  A  SEE  C 
FWD 
D  INBD 
D 
F 
F 
C  E 
E 
C  B 
A 
B 
A 
A  NOTE: LEFT AILERON SHOWN,____ RIGHT AILERON 
IS ALMOST THE SAME. 
Outboard Aileron Wear Limits 
Figure 601 (Sheet 1) 
　
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