(a)  
Fuel Jettison Control Card - Operational Test

 (b)  
Fuel Jettison Transfer Valve - CMC Ground Test

 (c)  
Fuel Jettison Single Point Sensor Card - CMC Ground Test

 (d)  
Fuel Jettison Nozzle Valve - Operational Test

 (e)  
Jettison Pumps - Operational Test

 (f)  
Fuel Jettison Transfer Valves - Fuel Transfer Operational Test

 (g)  
Fuel Jettison Simulation - Ground Test

 (h)  
Fuel Jettison Transfer Valve Test in the Center Wing Tank -Operational Test 1) This task is for digital task card requirements.

 TASK 28-31-00-715-065
 2.  Fuel Jettison Control Card Card - Operational Test__________________________________________________
 A.  General
 (1)  
This task does does a BITE test for the fuel jettison control card. This task also checks the operation of the fuel jettison control selector switch.

 (2)  
The fuel tanks can contain any amount 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

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 28-31-00
 ALL  ú ú 01 Page 501 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 D. Preconditions
 S 865-256
 (1)  
These conditions are necessary for this task:

 (a)  
Fuel Jettison System serviceable.

 (b)  
A specific fuel quantity is not necessary 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

 S 865-001
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-002

 (2)  
Make sure these circuit breakers are closed:

 (a)  
On the main power distribution panel, P6:
 1) 6C17, FUEL JTSN CONT B
 2) 6C18, JTSN NOZZLE VLV CONT R
 3) 6D17, FUEL JTSN CONT A
 4) 6D18, JTSN NOZZLE VLV CONT L
 5) 6E17, CTR R & MAIN 2 JTSN VLV
 6) 6F5, FUEL SYS MGMT CARD A
 7) 6F6, FUEL SYS MGMT CH1
 8) 6F7, FUEL SYS MGMT CARD B
 9) 6F8, FUEL SYS MGMT CH2
 10) 6F17, CTR L & MAIN 3 JTSN VLV

 (b)  
On the overhead circuit breaker panel, P7:
 1) 7H21, FUEL XFR VLV - MN 1
 2) 7H24, FUEL XFR VLV - MN 4

 (c)  
On the DC power distribution panel, P180:
 1) 180E2, FUEL OVRD/JTSN PMP CONT CTR L
 2) 180E3, FUEL OVRD/JTSN PMP CONT FWD 2&3
 3) 180E18, FUEL OVRD/JTSN PMP CONT AFT 2&3
 4) 180H17, FUEL SYS EICAS INTFC CONT
 5) 180H18, FUEL OVRD/JTSN PMP CONT CTR R

 (d)  
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

 (e)  
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

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