S 865-195
(1)
Put these center wing tank override/jettison pump switches on the fuel management control module (P5 pilots' overhead panel) to the ON position:
(a)
CTR L
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-31-00
ALL ú ú 14 Page 524 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(b) CTR R
S 715-064
(2) Make sure the amber PRESS indication light in each switch comes on, and then goes off.
S 715-264
(3) Make sure the white ON indication symbol in the pump switch shows.
S 715-197
(4) Monitor the fuel synoptic. (a) Make sure the pump box symbols for the center wing tank override/jettison pumps change color in this sequence: 1) White (pump off) 2) Amber (pump on - low pressure) (momentarily) 3) Green (pump on - pressure)
S 715-196
(5) Make sure these EICAS messages do not show on the top or bottom EICAS displays: (a) FUEL OVRD CTR L (STATUS or ADVISORY) (b) FUEL OVRD CTR R (STATUS or ADVISORY)
S 865-062
(6) Put these override/jettison pump switches for the No. 2 and No. 3 main tanks on the fuel management control panel (P5 pilots' overhead panel) to the ON position: (a) OVRD 2 FWD (b) OVRD 2 AFT (c) 3 OVRD FWD (d) 3 OVRD AFT
S 715-063
(7) Make sure the white ON indication symbol in each pump switch shows.
S 715-147
(8) Monitor the fuel synoptic. (a) Make sure the pump box symbols for the override/jettison pumps for the No. 2 and No. 3 main tanks change color in this sequence: 1) White (pump off)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-31-00
ALL ú ú 09 Page 525 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
2) Cyan (pump armed or standby)
S 715-155
(9)
Make sure these EICAS messages do not show on the top or bottom EICAS displays:
(a)
FUEL OVRD 2 AFT (STATUS or ADVISORY)
(b)
FUEL OVRD 2 FWD (STATUS or ADVISORY)
(c)
FUEL OVRD 3 AFT (STATUS or ADVISORY)
(d)
FUEL OVRD 3 FWD (STATUS or ADVISORY)
S 715-199
(10)
Put the override/jettison pump switches, CTR L and CTR R, to the off position (white ON indication symbol in each switch does not show).
S 715-200
(11)
Monitor the fuel synoptic.
(a)
Make sure the pump box symbols for the override/jettison pumps in the center wing tank change color in this sequence: 1) Green (pump on - pressure) 2) Amber (pump on - low pressure) (does not always show) 3) White (pump off)
S 715-198
(12)
Monitor the fuel synoptic.
(a)
Make sure the pump box symbols for the override/jettison pumps for the No. 2 and No. 3 main tanks change color in this sequence: 1) Cyan (armed or standby) 2) Amber (pump on - low pressure) (does not always show) 3) Green (pump on - pressure)
(13)
Put the FUEL JETTISON control selector switch to position A.
S 715-173
NOTE: With the jettison control selector switch in the A or B
____ position, the control of the override/jettison pumps for the No. 2 and No. 3 main tanks goes from the fuel system management cards (FSMC) A and B, to the fuel jettison control card (FJCC) A or B. The overide/jettison pumps for the No. 2 and No. 3 main tanks will not be commanded on by the FJCC A or B until jettison mode is active.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-31-00
ALL ú ú 12 Page 526 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 715-115
(14)
Monitor the fuel synoptic.
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(11)
