Walk-Around Inspection
Figure 601
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747-400 MAINTENANCE MANUAL
ACCESS DOORS AND PANELS - MAINTENANCE PRACTICES
_______________________________________________
1. General_______
A. This procedure has one task. The task is the installation of access doors and panels.
B. This section identifies access doors and panels that you can remove and install during maintenance. A three-digit number identifies the major zones, sub-zones, and zones as follows:
(1)
Major zones - The first number is a number from 1 through 8 followed by two zeroes.
(2)
Subzone - The first number is the major zone number; the second number is a number from 1 thru 6 or 9; the third number is a zero.
(3)
Zone - The first two numbers are the subzone numbers. The third number shows a component or group of components that are the same in the subzone (Fig 201).
MAJOR ZONE 100 - LOWER HALF OF FUSELAGE
ZONE SUBMAJOR FAIRINGS - STA 760 TO STA 1700 STA 2160 TO STA 2360 STA 1480 TO STA 2160 STA 1000 TO STA 1480 STA 460 TO STA 1000 STA 90 TO STA 460
190 150 140 130 120 110
Major Zone 100 - Lower Half of Fuselage
Figure 201 (Sheet 1)
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747-400
MAINTENANCE MANUAL
FORWARD LOWER LOBE COMPARTMENT, FORWARD HALF AREA BELOW FORWARD LEFT - 121, RIGHT - 122
AIR CONDITIONING EQUIPMENT BAY LEFT - 133, RIGHT - 134
Major Zone 100 - Lower Half of Fuselage Figure 201 (Sheet 2)
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