(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 27-51-51/401, Flap Control Unit
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
(5)
AMM 34-61-02/401, Control Display Unit
(6)
AMM 45-10-00/501, Central Maintenance Computer System
C. Access
(1) Location Zones
221 Control Cabin, LH
222 Control Cabin, RH
D. Preconditions
S 865-457
(1) These conditions are necessary for this task:
(a)
Electrical Power On (AMM 24-22-00/201).
(b)
Central Maintenance Computer (CMC), serviceable (AMM 45-10-00/501).
(c)
Hydraulic Pressure Supplied (AMM 29-11-00/201).
(d)
Control Display Unit (CDU), serviceable (AMM 34-61-02/401).
(e)
Pilots' Overhead Maintenance Panel (P461), installed.
(f)
Flight Control Computer (FCC), serviceable (AMM 22-11-01/401).
(g)
Flap Control Unit (FCU), serviceable (AMM 27-51-51/401).
E. Prepare for the Test
S 865-225
(1) Supply electrical power (AMM 24-22-00/201).
S 865-442
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Supply the hydraulic pressure to the hydraulic systems NO. 1, 2, 3, and 4 (AMM 29-11-00/201).
S 865-439
(3)
Make sure the FLT CONTROL HYD POWER TAIL 1, 2, 3, and 4 switches are in the NORM position. These switches are on the Pilots' Overhead Maintenance Panel (P461).
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747-400 MAINTENANCE MANUAL
S 865-440
(4)
Make sure the FLT CONTROL HYD POWER WING 1, 2, 3, and 4 switches are in the NORM position. These switches are on the Pilots' Overhead Maintenance Panel (P461).
S 865-226
(5)
Prepare the CDU for the test:
(a)
Push the MENU key on the CDU to show the MENU.
(b)
Push the line select key (LSK) that is adjacent to <CMC to show the CMC MENU.
(c)
If <RETURN shows after you push the LSK, push the LSK that is adjacent to <RETURN until you see the CMC MENU.
(d)
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.
(e)
Push the LSK that is adjacent to <22 AUTOPILOT FLT DIR to show the GROUND TESTS menu for the autopilot flight director system.
(f)
Push the NEXT PAGE key until you find <FLAP XDUCER.
NOTE: If INHIBITED shows above <FLAP XDUCER, the test will
____
not operate.
(g) If INHIBITED shows above <FLAP XDUCER 1) Push the LSK that is adjacent to the test prompt. 2) Do the steps shown on the CDU. 3) Push the LSK that is adjacent to <RETURN to show the ground
test menu again.
F. Flap Transducer Ground Test
S 745-227
(1) Push the LSK that is adjacent to <FLAP XDUCER.
(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>.
(c)
Continue with the instructions shown on the CDU to complete the test.
NOTE: If <ADVANCE shows during the test, push <ADVANCE to
____ continue after you complete or read the instructions.
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