(d)
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.
(e)
Push the NEXT PAGE key until you find <27 FLAP CONTROL.
(f)
Push the LSK that is adjacent to <27 FLAP CONTROL to show the GROUND TESTS menu for the flap control units.
(g)
Push the NEXT PAGE key until you find <FLAP CONTROL-L, -C, or -R.
NOTE: If INHIBITED shows above <27 FLAP CONTROL-L, -C, or -R,
____
the test will not operate.
(h) If inhibited shows above <FLAP CONTROL-L, -C or -R: 1) Push the LSK that is adjacent to the test prompt. 2) Make sure the airplane is not in the air mode. 3) Make sure the airspeed is less than 70 knots. 4) Push the LSK that is adjacent to <RETURN to show the ground
test menu again.
E. Flap Control Unit Ground Test
S 745-031
(1) Push the LSK that is adjacent to the applicable prompt (<FLAP CONTROL-L, -C, or -R).
NOTE: Do not use this test for troubleshooting any high lift system
____
component except the flap control unit.
(a)
When the TEST PRECONDITIONS page shows, make sure each instruction on the page is completed.
(b)
Push the LSK that is adjacent to START TEST>.
NOTE: IN PROGRESS shows during the test.
____
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747-400 MAINTENANCE MANUAL
S 745-032
(2) When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <FLAP CONTROL -L, -C, or -R.
NOTE: If a PASS indication shows, no failures occured during the
____
test.
(a) If FAIL> shows: 1) Push the LSK that is adjacent to FAIL> to see the GROUND TEST MSG pages for the failure. 2) Push the NEXT PAGE key until you find all the GROUND TEST MSG pages. 3) Make a list of all CMCS messages, CMCS message numbers, and ATA numbers that show on the GROUND TEST MSG pages.
4) Go to the CMCS Message Index of the Fault Isolation Manual (FIM) to find the corrective action for each CMCS message.
F. Put the Airplane Back to Its Usual Condition
S 865-033
(1) Remove the electrical power (Ref 24-22-00/201).
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747-400 MAINTENANCE MANUAL
INBOARD FLAP - REMOVAL/INSTALLATION
___________________________________
1. General_______
A. This procedure contains two tasks. The removal and installation of an inboard flap.
(1)
To remove an inboard flap, these operations are necessary:
(a)
The extension of the flaps
(b)
The removal of the flap track fairings
(c)
The removal of the inboard foreflap
(d)
The installation of the support equipment
(e)
The removal of the inboard flaps
(f)
A measurement of the shims.
(2)
To install an inboard flap, these operations are necessary:
(a)
A check of the parts for worn areas
(b)
A check of the shims
(c)
A check of the side movement of the midflap track
(d)
The installation of the inboard flap
(e)
The removal of the support equipment
(f)
The installation of the inboard foreflap
(g)
An adjustment of the inboard flaps
(h)
The retraction of the flaps.
(3)
These operations are optional:
(a)
The removal of the forward bogie from the flap carriage
(b)
The installation of the forward bogie to the flap carriage
B.
The inboard flap has three parts, the foreflap, midflap and aftflap. The inboard flap cannot be removed from the airplane as an assembly. To remove the inboard flap, you must disconnect the foreflap from the midflap. The midflap and aftflap can be removed from the airplane as an assembly. For procedures to remove and install the aftflap only, refer to (AMM 27-51-03/401). You must be careful when you move the flaps, because of the light weight materials, they are easily damaged.
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