–
fastener holes that became larger or longer
–
loose fasteners
–
missing fasteners (fasteners that have pulled out or are gone)
–
delaminations (a component with one or more layers pulled apart)
–
parts that are not aligned correctly
–
interference (clearance that is not sufficient between two parts)
–
discoloration (heat damage)
–
nicks or gouges
– other signs of damage
(2)
Replace or repair the components that have one or more of the conditions given above.
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2. Phase 1 Inspection
A. Airplane Inspection
(1) Main and Nose Landing Gear Inspection
(a)
Examine all tires and wheels.
(b)
Examine the support structure.
(c)
Look for signs of fluid leakage at the top and bottom of the outer cylinder of the shock strut.
NOTE: A small quantity of hydraulic fluid on the surface of the inner cylinder of the shock strut is satisfactory.
(2) Landing Gear, Fuselage, and Wing Inspection
(a) Look for fuel leaks, and other fluid leaks, in the areas that follow: 1) All wheel well areas of the main and nose landing gear. 2) The lower external surface of the fuselage in the area of the wing-to-body
fairing.
3) The wing.
3. Phase 2 Inspection
A. References
(1)
7-11-11, Jacking Airplane
(2)
12-15-31, Main Gear Shock Strut - Servicing
(3)
12-15-41, Nose Gear Shock Strut - Servicing
(4)
32-11-0, Main Landing Gear
(5)
32-11-21, Main Gear Shock Strut
(6)
32-21-0, Nose Landing Gear
(7)
32-21-11, Nose Gear Shock Strut
(8)
32-32-0, Main Landing Gear Extension and Retraction
(9)
32-33-0, Nose Landing Gear Extension and Retraction
(10)
32-51-0, Nose Wheel Steering System
B. Airplane Inspection
(1) Main Landing Gear and Support Structure Inspection
(a)
Make sure the shock strut pressures are normal and the hydraulic fluids are at the correct levels (Ref 12-15-31).
(b)
Lift the airplane with jacks (Ref 7-11-11).
(c)
Examine the inner and outer cylinder lugs.
(d)
Examine all structural components of the main landing gear and carefully examine the components that follow: 1) Shock strut 2) Trunnion link 3) Drag strut 4) Torsion links 5) Side strut 6) Walking beam fitting of the shock strut 7) Walking beam for the main gear actuator 8) Linkage fittings of the walking beam and actuator 9) The attach nut of the orifice support tube (signs of fluid leakage). 10) Strut doors and the mechanism that retracts and extends the doors.
(e)
Examine the support structure of the main landing gear and carefully examine the components that follow: 1) Landing gear beam 2) Support fittings for the landing gear beam
– Inboard
–
Outboard
3) Trunnion support fittings and attachments
– Forward
–
Aft 4) Stabilizer link and fittings between the rear spar and landing gear beam. 5) Body fitting for side strut and uplock attachment.
(f)
Examine all of the pin joints and fuse pin connections.
(g)
If you found tire damage in Phase 1, do the steps that follow:
1) Remove and examine the wheel structure.
2) Remove and examine the brake assembly.
3) Examine the axles.
(h)
If one or more of the conditions that follow occurred, remove, disassemble, and examine all parts of the shock strut (Ref 32-11-21). 1) The shock strut pressures were sufficiently low to cause damage. 2) The hydraulic fluid levels were sufficiently low to cause damage. 3) You found damage to one or more of the parts during your inspection of the
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landing gear.
NOTE: Do not remove the orifice support tube to examine it.
(i)
Make sure the main landing gear retracts and extends correctly (Ref 32-32-0).
(j)
Lower the airplane from the jacks (Ref 7-11-1).
(2) Nose Landing Gear and Support Structure Inspection
(a)
Make sure the shock strut pressures are normal and the hydraulic fluids are at the correct levels (Ref 12-15-41).
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