(c)
The assemblies of the drag brace link.
(d)
If the last two steps show signs of damage or hydraulic fluid leakage, remove the nose landing gear for an inspection (AMM 32-21-01/401).
(e)
Make sure the steering system operates correctly (AMM 32-51-00/501).
(f)
Make sure the steering mechanism is adjusted correctly (AMM 32-51-00/501).
E. Fuselage and Wing Inspection
S 212-073
(1) Examine the fuselage and wing areas that follow:
(a) The lower fuselage structure
1) Look carefully at the area below the body floor beams and between body stations 1480 and 1680.
NOTE: A vertically bent web on the keel beam is
____
satisfactory.
(b)
The joints of the wing at the fuselage and the wheel well bulkhead between body stations 1000 and 1241
(c)
The upper fuselage structure at body stations 1000, 1241, and 1480
(d)
Examine the side strut beam found in the location that follows:
1) Forward of body station 1350 and at water line 140, and the horizontal deck at water line 152 and at side of body and aft of body station 1350.
(e)
The ribs from WS 382 to 469 in the area of the rear spar
NOTE: You must go into the fuel tank for this inspection.
____
(f) The webs of the rear spar and midspar between the rib at wing station 469 and the side of body.
NOTE: You must go into the fuel tank for this inspection.
____
(g) The refuel manifold found along the spar and connection to the rib at the side of the body between wing station 359 and 386.
NOTE: You must go into the fuel tank for this inspection.
____
NOTE: Possible refuel line damage can cause accidental fuel
____ transfer into the inboard main fuel cell during subsequent refuel operations.
1) Look at the left hand and the right hand tubes that are installed between wing station 359 and 386.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
The bulkhead at body station 400.
NOTE: This inspection can be done from the aft side of the
____ bulkhead at body station 400, in the main center for the electrical/electronics equipment.
The fuselage structure immediately outboard of the nose wheel
well.
If the fuel tank had more than 1000 gallons in the horizontal
tail tank during the landing, do the inspections that follow:
NOTE: You must go into the fuel tank for this inspection.
____
NOTE: Possible refuel line damage can cause accidental fuel
____ transfer into the inboard main fuel cell during subsequent refuel operations.
1) Examine the hinge rib at body line 43.5
NOTE: Make sure you examine all stringer splices and the
____
rib chords at this rib.
2) Examine all of the attachments of the rib chords to the stringers on the lower surface of the fuel tank.
NOTE: Make sure you examine the fasteners, the rib chords,
____
and the stringer flanges.
Look for signs of fuel leaks or other fluid leaks in the areas that follow:
-
the wing
-
the nacelles
-
the pylons
-
the external surfaces of the fuselage
-
the wheel well of the nose landing gear
-
the wheel wells of the main landing gear.
Examine the fuselage skin attachments above the landing gear
beam at body station 1350.
Examine the lower fuselage aft of body station 2000 for signs
that it touched the runway.
If you find signs the runway was touched, examine the areas
that follow:
-
the APU firewall
-
the APU drain
-
the APU door
-
the outflow valve
-
the drain mast
-
the lower fuselage skin, stringers, frames, and the shear ties.
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