II. INSPECTION OPTIONS - DTR CHECK FORM W-11B From the rear spar to the front spar, inboard of BBL 70.85.
(1) Rib Upper Flange
(Internal) From Direction 3, including fastener locations, using visual inspection methods.
Access: Remove passenger cabin seats, carpeting and floor panels nearest the side-of-body splice. Zone(s): 107, 108.
8.1 WING SSI INFORMATION D6-82669 Original
(2) Rib Lower Flange
(Internal) From Direction 4, including fastener locations, using visual inspection methods.
Access: Same as I. (1).
Zone(s): Same as I. (1).
III. INSPECTION OPTIONS - DTR CHECK FORM W-11C From the rear spar to the front spar, outboard of BBL 70.85.
(1)
Skin (Internal) From Direction 1, adjacent to stringers and side-of-body rib, using visual inspection methods.
Access: Defuel and purge tank. Open wing access panels 7202, 7402.
Zone(s): 305, 405.
(2)
Skin
(Internal) From Direction 2, at specified locations using LFEC (Ref. NDT Manual D6-37239, Part 6, 57-30-02). 0.5 elapsed hours and 0.5 manhours are required to accomplish this inspection.
Access: Wing-to-Body Upper Fairings 3375, 3475, 3577, and 3677.
Zone(s): 222, 223.
(3) Stringer and Splice Fitting
(Internal) From Direction 3, including fastener locations, using visual inspection methods.
Access: Same as III. (1).
Zone(s): Same as III. (1).
IV. INSPECTION OPTIONS - DTR CHECK FORM W-11D From the rear spar to the front spar, outboard of BBL 70.85.
(1)
Rib Upper Flange
(Internal) From Direction 5, including fastener locations, using visual inspection methods.
Access: Same as III. (2).
Zone(s): Same as III. (2).
(2)
Rib Lower Flange
(Internal) From Direction 6, including fastener locations, using visual inspection methods.
Access: Same as III. (1).
Zone(s): Same as III. (1).
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W-12 - WING TO BODY JOINT
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W-12 INSPECTION INSTRUCTIONS REFERENCES ACCESS MANHOURS 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300/400/500 补充结构检查文件 SUPPLEMENTAL STRUCTURAL INSPECTION DOCUMENT 1(33)
