(2)
AMM 09-11-00/201, Towing
(3)
AMM 12-15-03/301, Wing Landing Gear Shock Strut
(4)
AMM 12-15-04/301, Body Landing Gear Shock Strut
(5)
AMM 12-15-05/301, Nose Landing Gear Shock Strut
(6)
AMM 32-00-30/201, Landing Gear Door Locks
(7)
AMM 32-09-02/201, Air/Ground Relay System
D. Access
(1) Location Zone 116 Area Between Nose Gear Well and Fuselage, Right (Nose Jack Point) 314 Stabilizer Torsion Box Compartment, Right (Aft Jack Point) 191 Fairing, Wing-to-Body, Forward Lower Half, Left (Left Body Jack Point)
192 Fairing, Wing-to-Body, Forward Lower Half, Right (Right Body Jack Point)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
07-11-01
ALL ú ú 01 Page 201 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
E. Prepare to lift the airplane. NOTE: You can lift the airplane on jacks with any or all of the doors
____
open.
S 222-002
(1) Make sure the airplane gross weight is to the approved limits (300,000 to 474,000 pounds [136,000 to 215,000 kg]) and that CG location is to the approved limits (14 to 36 percent MAC) (Fig. 201).
S 582-003
CAUTION: DO NOT LIFT THE AIRPLANE ON JACKS IN WINDS MORE THAN 30 KNOTS.
_______ IF YOU DO NOT OBEY THESE INSTRUCTIONS, DAMAGE TO THE AIRPLANE CAN OCCUR.
(2) Make sure you turn the airplane into the wind if it is possible, when it is out of the hangar.
S 492-032 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3) Install the ground locks in all landing gear (Ref 09-11-00/201).
S 492-033 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(4) Install the door locks in the main and nose landing gear doors (Ref 32-00-30/201).
S 492-006 CAUTION: DO NOT PERMIT THE AIRPLANE TO MOVE FORWARD OR AFT ON THE JACKS
_______ BEFORE THE JACKS ARE SEATED. IF THE AIRPLANE MOVES, IT CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(5) Make sure the wheel chocks are installed.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
07-11-01
ALL ú ú 01 Page 202 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
480,000
217,700
213,150470,000 208,650460,000
450,000 204,100
440,000
199,550
430,000
195,000
420,000 190,500
GROSS WEIGHT IN POUNDS
410,000
185,950
400,000
181,400
GROSS WEIGHT IN KG
390,000 176,900
380,000 172,350
370,000 167,800
360,000 163,300
350,000
158,750
340,000
154,200
330,000
149,700
320,000
145,150
310,000 140,600
300,000
136,050
14 16 18 20 22 24 26 28 30 32 34 36 1303.89 1310.45 1317.00 1323.56 1330.12 1336.67 1343.23 1349.78 1356.34 1362.90 1369.42 1376.01
UPPER SCALE - CENTER OF GRAVITY IN % MAC
LOWER SCALE - CENTER OF GRAVITY IN INCHES AFT OF DATUM POINT
Dynamic Airplane Jacking - Maximum Gross Weight Versus Center of Gravity Figure 201
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
07-11-01
ALL ú ú 01 Page 203 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 862-028
(6)
Make sure the airplane has a level attitude (AMM 08-00-00/201). S 862-007
INFLATED TOO MUCH MORE THAN THE SATISFACTORY PRESSURE. 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 LIFTING AND SHORING(3)
