MIL-STD-849B
TABLE III. Classification of defects - solid and extended skirt parachute canopies - personnel - Continued.
Classification No. Defect Major/Critical Minor
11. |
Cross and main seams, improper type or improper assembly |
113 |
12. |
Open seams |
114 |
NOTE: Seams will be classified as open when one or more
stitches joining a seam are broken or when two or more skipped stitches occur. Conditions repaired by either re-stitching or overstitching as specified will not be scored as a defect.
13. Overfold in main seam
Up to 1/2 inch or extended into center channel 210
Over 1/2 inch 115
14. Underfold in main seam
A 4-needle seam not caught by 3 rows of stitches by at least
1/16 of an inch 116
3 intermittent underfolds of a 2-needle seam up to 2 inches
long and less than 12 inches apart 211
More than 3 intermittent underfolds, up to 2 inches long and
less than 12 inches apart 117
Underfold more than 4 inches in length 118
15. |
Overfold and underfold in cross seam |
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Underfold 1/8 to 3/16 inch and up to 8 inches long |
212 |
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Underfold over 8 inches long |
119 |
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Up to 3 intermittent underfolds, 3/16 inch and up to 2 |
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inches long, over 12 inches apart |
213 |
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More than 3 intermittent underfolds, 3/16 inch and |
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up to 2 inches long, and less than 12 inches apart |
120 |
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Overfold 1/8 to 1/4 inch, full length of seam |
214 |
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Overfold over 1/4 inch any length |
121 |
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16. Fullness in seam width
Main seam
1/8 to 1/2 inch 215
Over 1/2 inch 122
Cross seam
1/8 to 1/4 inch 216
Over 1/4 inch 123
20
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