27-41-00
ALL ú ú 01 Page 508 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
TASK 27-41-00-715-089
6. Operational Test - Elevator Actuated Cutout Switches
____________________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
B.
Access
(1)
Location Zone
221 Control Cabin, LH
222 Control Cabin, RH
C.
Procedure
S 865-095
(1) Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 865-096
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Do this task to pressurize the hydraulic systems No. 2 and No. 3: "Supply Hydraulic Power" (AMM 29-11-00/201).
S 715-075
(3)
Do this test of the elevator actuated cutout switches:
(a)
Set the STAB TRIM 2 and 3 switches to ON.
(b)
Hold the STAB TRIM ALTN switches on the control stand to APL NOSE DN. 1) Make sure the stabilizer position indicators move to APL
NOSE DN.
(c)
Hold the STAB TRIM switches on the captain's control wheel to NOSE UP. 1) While the stabilizer moves, move the captain's control
column forward until the stabilizer stops. 2) Release the STAB TRIM switches. 3) Make sure the stabilizer position indicators did not get to
the full NOSE UP limit.
(d)
Hold the STAB TRIM ALTN switches to APL NOSE UP.
1) Make sure the stabilizer position indicators move to the APL NOSE UP limit.
(e)
Hold the STAB TRIM switches on the captain's control wheel to NOSE DN. 1) While the stabilizer moves, move the captain's control
column aft until the stabilizer stops. 2) Release the STAB TRIM switches. 3) Make sure the stabilizer position indicators did not get to
the full APL NOSE DN limit.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-00
ALL ú ú 01 Page 509 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(f) Set the STAB TRIM 2 and 3 switches to AUTO.
S 865-063
(4)
If the hydraulic power is not necessary, do this task: "Remove Hydraulic Power" (AMM 29-11-00/201).
S 865-064
(5)
If the electrical power is not necessary, do this task: "Remove Electrical Power" (AMM 24-22-00/201).
TASK 27-41-00-715-090
7. Operational Test - Stabilizer Trim Cutout Switches__________________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
B.
Access
(1)
Location Zone
221 Control Cabin, LH
222 Control Cabin, RH
C.
Procedure
S 865-097
(1) Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 865-098
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Do this task to pressurize the hydraulic systems No. 2 and No. 3: "Supply Hydraulic Power" (AMM 29-11-00/201).
S 715-076
(3)
Do this test of the stabilizer trim cutout switches:
(a)
Set the STAB TRIM 2 and 3 switches to CUTOUT.
(b)
Hold the STAB TRIM ALTN switches to APL NOSE UP.
1) Make sure the stabilizer position indicators on the control stand show no movement. 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 飞行操纵 FLIGHT CONTROLS 3(131)
