(b)
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
(c)
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 715-106
(10)
Do these steps to test the operation of the FUEL JETTISON control selector switch in the A position.
(a)
Put the FUEL JETTISON control selector switch on the fuel jettison module, (P5 pilots' overhead panel) to the A position.
(b)
Monitor the fuel synoptic. 1) Make sure the white jettison schematic segments show.
(c)
Make sure TEMP on the top EICAS display is replaced with TO REMAIN.
(d)
Turn the FUEL JETTISON FUEL TO REMAIN knob on the fuel jettison module (P5 pilots' overhead panel).
(e)
Make sure FUEL TO REMAIN value on the top EICAS display changes.
(f)
Put the FUEL JETTISON selector switch to the OFF position.
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747-400 MAINTENANCE MANUAL
(g) Make sure TO REMAIN on the top EICAS display is replaced with TEMP.
S 715-032
(11)
Do the steps again to test the operation of the FUEL JETTISON control selector switch with the selector switch in the B position.
S 715-107
(12)
Make sure the FUEL JETTISON control selector switch is in the OFF position.
G.
Put the Airplane Back to Its Usual Condition
S 865-108
(1) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
NOTE: If you do the fuel jettison transfer valve CMC
____ ground test, keep these circuit breakers open.
(a)
On the main power distribution panel, P6: 1) 6C18, JTSN NOZZLE VLV CONT R 2) 6D18, JTSN NOZZLE VLV CONT L
(b)
On the left power distribution panel, P414: 1) 414C5, FUEL OVRD/JTSN PUMP FWD 3 2) 414C2, FUEL OVRD/JTSN PUMP FWD 2 3) 414D2, OVRD/JTSN PUMP CTR L
(c)
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
(2)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-163
TASK 28-31-00-715-066
3. Fuel Jettison Transfer Valve - Ground Test
__________________________________________
A. General
(1)
The CMC ground test for the fuel jettison transfer valves does a test of these fuel jettison components:
(a)
Fuel jettison control card A
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B.
C.
D.
E.
A
747-400 MAINTENANCE MANUAL
(b)
Fuel jettison control card B
(c)
Fuel jettison transfer valve for the center wing tank (left)
(d)
Fuel jettison transfer valve for the center wing tank (right)
(e)
Fuel jettison transfer valve for the No. 2 main tank
(f)
Fuel jettison transfer valve for the No. 3 main tank
(g)
Fuel system jettison valve for the No. 1 main tank
(h)
Fuel system jettison valve for the No. 4 main tank.References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 28-22-16/401, Fuel System Card File
(3)
AMM 31-61-00/501, Integrated Display System (IDS)
(4)
AMM 32-09-02/201, Air/Ground Relays
(5)
AMM 34-61-02/401, Control display Unit
(6)
AMM 45-10-00/501, Central Maintenance Computer (CMC)
(7)
AMM 28-22-16/401, Fuel System Card File
(8) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 燃油 FUEL 4(2)
