ECS FREIGHTER 
CARD, YMLA17 
PACK 3 
GROUND 
ECS MISCELLANEOUS  SERVICE 
CARD, YMLA13  CONNECTOR 
FWD 
AIR CONDITIONING 
EQUIPMENT BAY 

FORWARD ELECTRICAL SYSTEMS CARD FILE, M7603 F Distribution - Component Location Figure 102 (Sheet 3)
E00134
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-20-00
 ALL  ú ú 01F Page 105 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
FLIGHT DECK AIR DISTRIBUTION FAN, H544
SEE G
LEFT AND RIGHT BULK CARGO FLAPPER VALVE, V488,V489
SEE H
SOLENOID VALVE FLAPPER 
DOOR FLAPPER 
FWD  S2021 S2020, SWITCH, RESET  INBD 
G FLIGHT DECK AIR DISTRIBUTION FAN, H544 (VIEW IN THE INBOARD DIRECTION)  H VALVE, V488,V489 BULK CARGO FLAPPER 
Figure 102 (Sheet 4) Distribution - Component Location 

E00145
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-20-00
 ALL  ú ú 01F Page 106 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
CREW REST AREA SMOKE MODE SHUTOFF VALVE, V553
SEE I
FWD
CREW REST AREA SMOKE MODE
SHUTOFF VALVE, V553

I

Distribution - Component Location

Figure 102 (Sheet 5)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-20-00
 ALL  ú ú 01F Page 107 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E00171
A

747-400
FAULT ISOLATION/MAINT MANUAL

FORWARD CARGO VENTILATION FANS, B8642, B8643
SEE J
FAN
INLET SCREEN/CHECK VALVE ASSEMBLY
FWD
INBD
FORWARD CARGO VENTILATION FAN, B8642, B8643 J
Distribution - Component Location Figure 102 (Sheet 6)
E00173
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-20-00
 ALL  ú ú 01F Page 108 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
FAULT ISOLATION/MAINT MANUAL

AFT CARGO VENTILATION FAN, B8290
SEE K
INLET SCREEN/CHECK VALVE ASSEMBLY FAN
FWD
AFT CARGO VENTILATION FAN, B8290 K
Distribution - Component Location
Figure 102 (Sheet 7)

 E00174
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-20-00
 ALL  ú ú 01F Page 109 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
BULK CARGO FAN, B8291 SEE L
FAN
INLET SCREEN/CHECK VALVE ASSEMBLY  FWD 
INBD 
L BULK CARGO FAN, B8291
Distribution - Component Location Figure 102 (Sheet 8) 

E00176
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-20-00
 ALL  ú ú 01F Page 110 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400 FAULT ISOLATION/MAINT MANUAL
LOWER FORWARD CARGO OVERBOARD EXHAUST STACK
SEE M
STA
　
中國(guó)航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 空調(diào) AIR CONDITIONING 1(15)