MIL-STD-849 Inspection Requirements, Definitions And Classification Of Defects For ParachutesThis standard establishes the inspection requirements and a standard classification of manufacturing and final assembly defects for parachutes.

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MIL-STD-849B

TABLE XV.  Classification of defects - solid and extended skirt parachute canopies - cargo - Continued.

Classification

No.                  Defect                                                                                 Major/Critical     Minor

Less than 1/2 inch                                                                                              243

More than 1/2 inch                                                                    168

Runoff, 2 or more stitches into single cloth or beyond seam or hem margins

Up to 1/2 inch                                                                                                    244

Over 1/2 inch                                                                             169

Zigzag stitches with less than 85 percent penetration

through suspension lines                                                           170

Tension too loose or too tight, up to 6 inches per seam                                          245

Tension too loose or too tight, over 6 inches per seam                   171

Kinks, intermittent, less than 2 inches apart                                                            246

Stitch pattern lengths not as specified (stitch patterns up to

5 inches long)

Up to 1/8 inch minus                                                                                         247

Over 1/8 inch minus                                                                  172

Over 1/4 inch plus                                                                                             248

Stitch pattern lengths not as specified (stitch patterns over

5 inches long)

Up to 1/4 inch minus                                                                                         249

Over 1/4 inch minus                                                                  173

Over 1/2 inch plus                                                                                             250

45.        Frequency of repair to stitching and splicing on canopies, regardless of the number of rows of stitching in the seams in excess of that

specified below, shall be classified as a major defect                           174

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