(b)
Engine Cases
(c)
External Engine Components and Plumbing
(d)
Engine Gearbox Housing
(e)
Engine Gearbox Mounts
S 212-046
(2) Do the dragged engine nacelle conditional inspection
(Ref 05-51-06/201).
G. Examine the horizontal stabilizer fuel tank.
S 212-064
(1) If the landing was made with more than 1000 gallons (6,700 pounds) of fuel in the horizontal stabilizer fuel tank, do these steps:
(a)
Examine the hinge rib at BL 43.5 for damage. The examination must include all stringer splices at this rib as well as the rib chords.
(b)
Examine all of the rib chord-to-stringer attachments, fasteners, rib chords, and stringer flanges on the lower surface within the fuel tank.
NOTE: Tank entry is necessary for these inspections.
____
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747-400 MAINTENANCE MANUAL
LANDING WITH ONE MAIN GEAR UP - MAINTENANCE PRACTICES
_____________________________________________________ (CONDITIONAL INSPECTION)
________________________
1. General
_______
A. Landing with One Main Gear Up
(1)
When the airplane makes a landing with one wing or one body gear retracted, you must do the procedure that follows.
(2)
This procedure is divided into two Phases. Phase I gives instructions for the condition of the airplane with one landing gear retracted. You must do all of Phase I of the procedure. If you find no damage from the Phase I inspection, you are done with the procedure. If the Phase I items in paragraph 2.B (Landing with one wing gear retracted) show signs of damage or problems, you must do Phase II of the inspection. If Phase I items in paragraph 2.C (Landing with one body gear retracted) show signs of damage or problems, you must repair those items. This will complete the inspection.
TASK 05-51-40-202-027
2. Phase I Airplane Examination
____________________________
A. References
(1)
32-45-03/601, Wheels
(2)
32-45-04/601, Tires
B. Landing with one wing gear retracted.
S 202-001
(1) Examine the body landing gear and its support structure on the side of the wing landing gear that is retracted.
(a)
Replace the wheel and tire assemblies.
(b)
Discard the tires you removed.
(c)
Examine the brake assemblies for damage.
(d)
Examine the oleo upper and lower ends for signs of fluid leakage or problems to keep satisfactory pressure.
NOTE: A small quantity of fluid on the inner cylinder is not a
____
sign of problems.
(e)
Examine the gear strut door and linkage for distortion, cracks, or other problem signs.
(f)
Examine the trunnion and the upper end of the shock strut for cracks and bolt distortion.
(g)
Examine the components that follow for damage: 1) The drag strut 2) The support fitting for the drag strut 3) The side strut 4) The side strut attachments
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747-400 MAINTENANCE MANUAL
5) The trunnion attach fittings for distortion
(h)
Examine the area for cracks and fasteners that are pulled or are not there.
(i)
Examine the positioning mechanism of the body truck and the linkage for distortion, cracks or other problem signs.
(j)
Examine the body truck beams for distortion, cracks, or other problem signs.
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