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MAINTENANCE MANUAL
(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 NEXT PAGE key until you find <21 AIR CONDITIONING.
(f)
Push the LSK that is adjacent to <21 AIR CONDITIONING to show the GROUND TESTS menu for the air conditioning system.
(g)
Push the NEXT PAGE key until you find <PTC-A/PACK-1.
NOTE: If INHIBITED shows above <PTC-A/PACK-1, the test will
____
not operate.
(h) If INHIBITED shows above <PTC-A/PACK-1: 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.
S 864-021
(4) Push the LSK that is adjacent to <PTC-A/PACK-1.
(a)
When the TEST PRECONDITIONS page shows, make sure each instruction on the page is completed. (Push the NEXT PAGE key to see subsequent pages.)
(b)
Push the LSK that is adjacent to START TEST>.
NOTE: IN PROGRESS shows during the test.
____
S 714-022
(5) When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <PTC-A/PACK-1.
NOTE: If a PASS indication shows, no failures occurred 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.
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747-400 MAINTENANCE MANUAL
E. Put the Airplane Back to its Usual Condition.
S 864-016
(1)
Set the GND TESTS switch to the NORM position.
S 414-014
(2)
Install the floor panel that you removed.
S 434-020
(3)
Install the cargo handling hardware that you removed.
S 864-015
(4)
Remove the electrical power if it is not necessary (AMM 24-22-00/201).
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747-400 MAINTENANCE MANUAL
FLIGHT DECK FLOW REGULATING VALVE - ADJUSTMENT/TEST
___________________________________________________
1. General
________
A. This procedure does an operational check of the flight deck flow
regulating valve for maintenance planning data task cards.
(1)
The first task does an operational check of the flight deck flow regulating valve.
(2)
The second task makes sure that the flight deck flow regulating valve goes to the fully open position when you arm the main deck, lower forward, or lower aft cargo fire compartments.
TASK 21-61-09-705-001
2. Flight Deck Flow Regulating Valve Operational Check
___________________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
SSM 21-25-05
(3)
WDM 21-25-51
B. Access
(1) Location Zone
241 Main Deck, LH
C. Do the Operational Check of the Flight Deck Flow Regulating Valve
S 865-002
(1)
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