S 715-150
(17)
Make sure the amber VALVE intransit light in each of the L-NOZZLE and NOZZLE-R switches does not show.
G.
Put the Airplane Back to Its Usual Condition
S 865-082
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
On the left power distribution center, P414:
1) 414C5, FUEL OVRD/JTSN PUMP FWD 3
2) 414C2, FUEL OVRD/JTSN PUMP FWD 2
3) 414D2, OVRD/JTSN PUMP CTR L
(b)
On the right power distribution center, P415: 1) 415A38, FUEL OVRD/JTSN PUMP AFT 2 2) 415B38, FUEL OVRD/JTSN PUMP AFT 3 3) 415M32, OVRD/JTSN PUMP CTR R
S 865-146
(2) Close the refuel control panel access door, 521CB, if it is not needed.
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A
747-400 MAINTENANCE MANUAL
S 865-152
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING
_______ EDGE AND TRAILING EDGE FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
(3)
Retract the leading edge flaps, if extended (AMM 27-81-00/201).
S 865-165
(4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
TASK 28-31-00-715-151
6. Jettison Pumps - Operational Test_________________________________
A. General
(1)
This task does an operational test of these fuel jettison system components:
(a)
Center wing tank override/jettison pumps
(b)
Main tank override/jettison pumps
(c)
Fuel jettison control card (FJCC) control of the jettison pumps
(d)
Fuel synoptic jettison pump display
(2)
This task operates the fuel pumps that are necessary for the fuel jettison system. Make sure the minimum and maximum fuel quantities called out in the prepare for the test procedure are available.
B.
References
(1)
AMM 12-11-01/301, Fuel Servicing
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 28-22-16/401, Fuel System Card File
(4)
AMM 28-26-00/201, Defueling
(5)
AMM 31-61-00/501, Integrated Display System (IDS)
(6)
AMM 32-09-02/201, Air/Ground Relays
(7)
AMM 34-61-02/401, Control display Unit
(8)
AMM 45-10-00/501, Central Maintenance Computer (CMC)
(9)
AMM 28-26-00/201, Defueling
C.
Access
(1)
Location Zones
221 Control Cabin, Left
222 Control Cabin, Right
D.
Preconditions
S 865-260
(1)
These conditions are necessary for this task:
(a)
Fuel Jettison System serviceable.
(b)
A specific fuel quantity is necessary for this task. (AMM 12-11-01/301, AMM 28-26-00/201).
(c)
Electrical Power On (AMM 24-22-00/201).
(d)
Fuel System Card File serviceable (AMM 28-22-16/401).
(e)
Integrated Display System (IDS) serviceable (AMM 31-61-00/501).
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A
747-400
MAINTENANCE MANUAL
(f)
Airplane must be in the ground mode (AMM 32-09-02/201).
(g)
CDU installed (AMM 34-61-02/401).
(h)
Central Maintenance Computer (CMC) serviceable (AMM 45-10-00/501).
E.
Prepare for the Test
S 865-075
(1)
Supply electrical power (AMM 24-22-00/201).
