747-400 AMM 飞机维护手册 限制/维护检查(73)

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 B.  Overweight Landing
 (1)  When an airplane lands at a weight above the maximum design landing weight (MLW), the landing is an overweight landing and the examination given below must be done.
 C.  The Examination
 (1)  
The examination is divided into Phase I and II. Phase I step 2A examination is applicable when comments from the flight crew indicate the overweight landing sink rate was low to moderate. Phase I step 2B examination is applicable when comments from the flight crew indicate the overweight landing sink rate was more than moderate.

 (2)  
If the examination per Phase I shows no signs of damage, the inspection is complete. If the Phase I step 2A shows any signs of damage, the Phase I step 2B must be done. If the Phase I step 2B examination shows any signs of damage, the Phase II examination must be done.

 TASK 05-51-39-202-001
 2.  Phase I Examination___________________
 A.  Examine the airplane structure for an overweight landing condition at a low to moderate sink rate.
 S 212-007
 (1)  
Examine the lower fuselage structure aft of body station 2000 for signs of runway contact.

 S 212-002

 (2)  
Examine the body landing gear.

 (a)  Examine the body landing gear for cracked paint or chipped paint.
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747-400
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 (b)  
Examine the body landing gear support structure for cracked or chipped paint.

 (c)  
Examine the body landing gear tires for signs of damage.

 (d)  
Examine the body landing gear wheels for signs of damage.

 (e)  
Examine the upper and lower ends of the body landing gear shock strut for signs of fluid leakage.

 NOTE: A small amount of fluid on the body landing gear shock
____
 strut inner cylinder is normal.

 (f)  Examine the body landing gear truck beams for signs of distortion.
 S 212-069
 (3)  Examine the wing landing gear.
 (a)  
Examine the wing landing gear for cracked paint or chipped paint.

 (b)  
Examine the wing landing gear support structure for cracked or chipped paint.

 (c)  
Examine the wing landing gear tires for signs of damage.

 (d)  
Examine the wing landing gear wheels for signs of damage.

 (e)  
Examine the upper and lower ends of the wing landing gear shock strut for signs of fluid leakage.

 NOTE: A small amount of fluid on the wing landing gear shock
____
 strut inner cylinder is normal.

 (f)  Examine the wing landing gear truck beams for signs of distortion.
 S 212-070
 (4)  Examine the nose landing gear.
 (a)  
Examine the nose landing gear tires for signs of damage.

 (b)  
Examine the nose landing gear wheels for signs of damage.

 (c)  
Examine the nose landing gear for cracked or chipped paint.

 (d)  
Examine the nose landing gear support structure for cracked or chipped paint.

 (e)  
Examine the upper and lower ends of the nose landing gear shock strut for signs of fluid leakage.

 NOTE: A small amount of fluid on the nose landing gear shock
____
 strut inner cylinder is normal.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 B.  Examine the airplane structure for an overweight landing at more than a moderate sink rate.
 S 212-009
 (1)  Examine these areas of the nacelle-strut for buckling, cracks, pulled fasteners, and fasteners which are not there:
 (a)  
Nacelle-Strut Doors

 (b)  
Nacelle-Strut Panels

 (c)  
　
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