(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
TASK 28-31-00-715-067
4. Fuel Jettison Single Point Sensor Card - Ground Test____________________________________________________
A. General
(1)
The CMC ground test for the fuel jettison single point sensor card (SPS) makes sure the SPS operates correctly for the fuel jettison system.
(2)
The CMC ground test also makes sure that the SPS operates correctly for these systems:
(a)
Transfer system for the reserve tank.
(3)
The fuel tanks can contain any quantity of fuel. There is not a fuel quantity limit for this task.
B.
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)
C.
Access
(1)
Location Zones
221 Control Cabin, Left
222 Control Cabin, Right
D.
Preconditions
S 865-258
(1)
These conditions are necessary for this task:
(a)
Fuel Jettison System serviceable.
(b)
The fuel tanks can contain any quantity of fuel. There is not a fuel quantity limit for this task.
(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).
(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
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-073
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28-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-111
(2)
Make sure these circuit breakers are closed:
(a)
On the main power distribution panel, P6:
1) 6C17, FUEL JTSN CONT B
2) 6D17, FUEL JTSN CONT A
3) 6F5, FUEL SYS MGMT CARD A
4) 6F6, FUEL SYS MGMT CH1
5) 6F7, FUEL SYS MGMT CARD B
6) 6F8, FUEL SYS MGMT CH2
(b)
On the DC power distribution panel, P180:
1) 180H17, FUEL SYS EICAS INTFC CONT
S 865-103
(3)
Make sure the airplane is in the ground mode (the airplane is not held up by jacks and the targets are not installed).
S 865-115
(4)
Set the GND TESTS switch on the overhead maintenance panel, P461, to the ENABLE position.
S 865-105
(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 NEXT PAGE key until you find <28 FUEL.
(f)
Push the LSK that is adjacent to <28 FUEL to show the GROUND TESTS menu for the fuel system.
(g)
Push the NEXT PAGE key until you find <SNGL PT SNSR CARD.
NOTE: If INHIBITED shows above <SNGL PT SNSR CARD the test
____
will not operate.
(h) If INHIBITED shows above <SNGL PT SNSR CARD: 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 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(5)
