(2)
Deactuator - proximity sensor (optional) Material: 5052, 6061, 7075, or 2024 aluminum or sheet copper Size: 1.5 x 0.75 x 0.05 inches
C.
References
(1)
AMM 07-11-01/201, Jacking Airplane
(2)
AMM 24-22-00/201, Manual Control
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32-09-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
D. Access
(1)
Location Zone
715 Nose Landing Gear
735 Left Wing Landing Gear
745 Right Wing Landing Gear
755 Left Body Landing Gear
765 Right Body Landing Gear
E.
Put the Air/Ground Relay System in the Ground Mode
S 482-065
(1)
Put de-actuators on these sensors of the wing, body, and nose landing gear:
(a)
S416 Right Wing Gear Tilt (primary)
(b)
S614 Right Wing Gear Tilt (alternate)
(c)
S418 Right Body Gear Tilt (primary)
(d)
S613 Right Body Gear Tilt (alternate)
(e)
S800 Nose Gear Squat switch (primary)
(f)
S801 Nose Gear Squat (alternate).
(g)
S417 Left Wing Gear Tilt (primary)
(h)
S615 Left Wing Gear Tilt (alternate)
(i)
S419 Left Body Gear Tilt (primary)
(j)
S612 Left Body Gear Tilt (alternate)
S 422-064
(2)
If any of the landing gear or tilt sensors are removed, then you will have to connect tilt sensors to the airplane wiring. You will also have to attach actuators to the sensors.
(a)
To temporarily install a wing gear sensor, refer to the applicable steps in this procedure: Wing Gear Truck Tilt Sensors - Maintenance Practices (AMM 32-61-22/201).
(b)
To temporarily install a body gear sensor, refer to the applicable steps in this procedure: Body Gear Truck Tilt Sensors - Maintenance Practices (AMM 32-61-12/201).
(c)
To temporarily install a nose gear sensor, refer to the applicable steps in this procedure: Nose Gear Squat Sensor -Maintenance Practices (AMM 32-61-01/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
TASK 32-09-02-712-027
7. Check of the Air Mode/Ground Mode - Air/Ground Relay System
___________________________________________________________
A. General
(1)
This procedure gives the condition of the primary and alternate air/ground relay system. Use CMC Input Monitoring to find the values for the air/ground bit for the sensing systems. The bit will be a 0 if the system is in the air mode. The bit will be a 1 if the system is in the ground mode.
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 45-10-00/501, Central Maintenance Computer System
C.
Do a check of the Air/Ground relay system.
S 862-041
(1)
Supply electrical power (AMM 24-22-00/201).
S 712-042
(2)
Make sure the CMC system is operational (AMM 45-10-00/501).
NOTE: It is only necessary to do the operational test of the CMC
____
system.
S 712-029
(3)
Do a check of the alternate air/ground relay system for the air mode or the ground mode.
(a) 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機維護手冊 起落架 LANDING GEAR 1(53)
