22-10-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(2)
AMM 27-51-51/401, Flap Control Unit
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
(4)
AMM 34-61-02/401, Control Display Unit
(5)
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 865-459
(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)
Flight Control Computer (FCC), serviceable (AMM 22-11-01/401).
(f)
Pilots' Overhead Maintenance Panel (P461), installed.
(g)
Flap Control Unit (FCU), serviceable (AMM 27-51-51/401).
E. Prepare for the Test
S 865-243
(1) Supply electrical power (AMM 24-22-00/201).
S 865-244
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 865-328
WARNING: MAKE SURE THAT YOU INSTALL THE TOW PIN AT THE NOSE LANDING
_______ GEAR. THE MOVEMENT OF THE RUDDER CAN CAUSE THE NOSE LANDING GEAR TO MOVE. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3) Install the tow pin at the nose landing gear.
NOTE: For installation location of the tow pin, refer to
____
AMM 09-11-00/201.
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ALL ú ú 05 Page 541 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(4) S 865-245Make 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).
(5) S 865-246Make 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).
(6) S 865-247Set the STAB TRIM 2 and 3 switches on Pilots' Control Stand to the AUTO position.
(7) S 865-248Use the manual trim switches (captain's or first officer's) on the Pilots' Control Wheel to set the stabilizer to 6 units of trim.
(8) S 865-249Prepare 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 <XDUCER OUTPUTS.
NOTE:____ If INHIBITED shows above <XDUCER OUTPUTS, the test will not operate.
(g) If INHIBITED shows above <XDUCER OUTPUTS: 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.
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