Access:  Defuel and purge tank (S2211).  Access through left air-conditioning equipment bay access door (3303) and through left center wing tank lower forward skin access panel and spanwise beam access holes.
Zone(s):  221.
(2)
Spar Chord
(Internal) From Direction 2, using HFEC (Ref. NDT Manual D6-37239, Part 6, 57-10-23).

2.0 elapsed hours and 2.0 manhours are required to accomplish this inspection.
Access: Same as I. (1).
Zone(s): Same as I. (1).

(3)
Skin
(Internal) From Direction 3, using visual inspection methods.

Access: Same as I. (1).
Zone(s): Same as I. (1).

8.1   WING SSI INFORMATION D6-82669 Original

II.  INSPECTION OPTIONS - DTR CHECK FORM W-1B Series -400 only. Inspect the spar chord between right and left side of body splices.
(1) Spar Chord
(Internal) From Direction 1, using visual inspection methods.

Access:  Defuel and purge tank (S2211).  Access through left air-conditioning equipment bay access door (3303) and through left center wing tank lower forward skin access panel and spanwise beam access holes.
Zone(s):  221.
(2) Spar Chord
(Internal) From Direction 2, using HFEC (Ref. NDT Manual D6-37239, Part 6, 57-10-23).

2.0 elapsed hours and 2.0 manhours are required to accomplish this inspection.
Access: Same as II. (1).
Zone(s): Same as II. (1).

Original  D6-82669 8.1 WING SSI INFORMATION

8.1  WING SSI INFORMATION D6-82669 Original

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N75697
W-6 - WING CENTER SECTION, LOWER PANEL, TYPICAL STRINGER
Original D6-82669 8.1 WING SSI INFORMATION

W-6  INSPECTION INSTRUCTIONS  REFERENCES  ACCESS MANHOURS 
MPD  CPCP  OTHERS  INSP  MHRS  ELPSD 
TITLE:  WING CENTER SECTION, LOWER PANEL, TYPICAL STRINGER  S57-01-A S57-18-A S57-30-B  C57-221-01 C53-212-01  98  49 

I.  INSPECTION OPTIONS - DTR CHECK FORM W-6A Lower panel Stringer 1 from Side-of-Body to Side-of-Body.
(1) Skin
(Internal) From Direction 1, inspect the skin from outside the wing tank at stringer fastener locations using visual inspection methods.
NOTE:  Valid only where skin is not obstructed.
Access:  Access through left air-conditioning equipment bay access door (3303) and the ram inlet duct cavity. Remove ducting and ducting access door and air-conditioning equipment as required.
Zone(s):  211, 212, 213, 214, 215
(2) Stringer
(Internal) From Direction 2, using visual inspection methods.

Access:  Defuel and purge tank (S2211). Access through left air-conditioning equipment bay access door (3303) and through left center wing tank lower forward skin access panel and spanwise beam access holes.
　
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