(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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