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MAINTENANCE MANUAL
2) Access the fuse pin that is to be inspected. a) Remove all strut panels and doors, and open the nacelle cowlings (AMM 54-52-01/601).
3) Pull the fuse pin out 0.5 inches (0.127 mm). If the fuse pin is free to slide in and out of the lugs, no damage exists.
C. Nacelle and Nacelle-Strut (General visual inspection for obvious damage)
NOTE: Examine the strut at the damaged engine position.
____ S 212-026
(1) Examine the components that follow for obvious damage:
(a)
Strut to wing fairings
(b)
Pylon panels
(c)
Pylon doors
(d)
Strut skins (cut outs around edges: inner and outer surfaces).
(e)
Nacelle cowlings
S 012-027
(2)
Open the trailing edge fairing doors and remove the strut access panels (AMM 06-09-09/201).
S 212-028
(3)
Examine the internal strut areas that follow:
(a)
Bulkhead spars
(b)
Bulkhead spars
S 212-036
(4)
Examine the strut mid-spar carefully.
S 212-029
(5)
Examine all engine mounts and adjacent structure.
NOTE: Examine the bulkhead area of the aft engine mount carefully.
S 012-030
(6) Do the steps that follow:
NOTE: For nacelle impact damage condition, make a decision if
____ replacement of the cowls, tailcone, or reverser sleeves is necessary. If replacement is not necessary, it is not necessary to do these steps.
(a)
Remove the gap cover above the upper link.
(b)
Remove the trailing edge fixed fairing (inboard struts).
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(c) Examine the areas of the struts that follow:
1) Mid-spar attachment area:
-Strut mid-spar fittings _ Spring beam mid-pivot area
-Spring beams
-Under wing fittings
-Fuse pins
-Lugs
-Side links
-Attachment hardware
-
All other structure in this area. 2) Diagonal brace area:
-Diagonal brace assembly
-Strut attach fitting
-Wing attach fitting
-Lugs
-Bushings
-Fuse pins (upper pin only)
-
All other structure in this area. 3) Upper link area:
-Upper link assembly
-Strut attach fitting - Wing attach fitting, including upper skin attachments. -_ Lugs
-Bushings
-Fuse pins (forward pin only)
-Wing leading edge beam located above each engine strut
-Strut to wing fairing
-
All other structure in this area. 4) If you think there is possible engine damage or seizure,
examine the engine. 5) Remove the engine if it is necessary.
D. Put the Airplane Back to Its Usual Condition
S 412-034
(1)
Close all of the cowling, panels, fairings, and doors.
S 422-035
(2)
Install the components you removed if they are serviceable, or install replacement parts.
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OVERWEIGHT TAXI CONDITION (CONDITIONAL INSPECTION) -
__________________________________________________ MAINTENANCE PRACTICES
_____________________
1. General_______
A. Overweight Taxi
(1)
Taxiing at a weight that is more than the maximum-design-taxi weight (MTW).
(2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 限制/维护检查(20)
