32-09-00
 ALL  ú ú 02 Page 6 ú Feb 18/02 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
747-400 
MAINTENANCE MANUAL
 (b) The alternate landing gear subsystem has these sensors:
 1) The alternate uplock sensors:
 -S1636 LH Body Gear
 -S1637 RH Body Gear
 -S1638 LH Wing Gear
 -S1639 RH Wing Gear.
 2) The alternate downlock sensors:
 -S412 RH Wing Gear
 -S413 RH Body Gear
 -S414 LH Body Gear
 -S415 LH Wing Gear.
 3) The alternate tilt sensors:
 -S612 LH Body Gear Tilt
 -S613 RH Body Gear Tilt
 -S614 RH Wing Gear Tilt
 -S615 LH Wing Gear Tilt.
 4) The alternate nose gear up sensor:
 -S411 Nose Gear Up.
 5) The alternate nose gear lock sensor:
 -S424 Nose Gear Lock.
 6) The alternate nose gear squat sensor:
 -S801 Nose Gear Squat.
 7) The alternate nose door sensor:
 -S425 RH Nose Door Warning.
 8) The alternate body gear door sensors:
 -S427 RH Body Door Warning
 -S428 LH Body Door Warning.
 9) The alternate wing gear door sensors:
 -S395 L Wing Door Warning
 -S426 R Wing Door Warning.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 32-09-00
 ALL  ú ú 02 Page 7 ú Oct 10/97 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
747-400 MAINTENANCE MANUAL
 (c)  The thrust reverser and auto restow subsystems have these sensors:
 1) The auto restow sensors:
 -
S1604 Eng No. 1 LH T/R Stowed
 -
S1604 Eng No. 2 LH T/R Stowed
 -
S1604 Eng No. 3 LH T/R Stowed
 -
S1604 Eng No. 4 LH T/R Stowed
 -
S1605 Eng No. 1 RH T/R Stowed
 -
S1605 Eng No. 2 RH T/R Stowed
 -
S1605 Eng No. 3 RH T/R Stowed
 -
S1605 Eng No. 4 RH T/R Stowed.
 2) The lock sensors:
 -
S1607 Eng No. 1 LH Actuator Lock
 -
S1607 Eng No. 2 LH Actuator Lock
 -
S1607 Eng No. 3 LH Actuator Lock
 -
S1607 Eng No. 4 LH Actuator Lock
 -
S1608 Eng No. 1 RH Actuator Lock
 -
S1608 Eng No. 2 RH Actuator Lock
 -
S1608 Eng No. 3 RH Actuator Lock
 -
S1608 Eng No. 4 RH Actuator Lock.
 3) The deploy sensors:
 -
S1609 Eng No. 1 LH Cowl Deployed
 -
S1609 Eng No. 2 LH Cowl Deployed
 -
S1609 Eng No. 3 LH Cowl Deployed
 -
S1609 Eng No. 4 LH Cowl Deployed
 -
S1610 Eng No. 1 RH Cowl Deployed
 -
S1610 Eng No. 2 RH Cowl Deployed
 -
S1610 Eng No. 3 RH Cowl Deployed
 -
S1610 Eng No. 4 RH Cowl Deployed.
 (2)  
The logic/driver operation mixes sensor logic signals and discrete switch inputs. This supplies discrete outputs for control systems and indication (Fig 3).
 (a)  
The discrete input signals are as follows:
 
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 起落架 LANDING GEAR 1(43)