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

Over 1/4 inch                                                                                   137

Rows of stitching not through skirt band webbing                         138

25.       Overfold of main seam around skirt webbing not straight                                            224

26.       Matching of centerline of seams when folded

1/8 inch to 1/4 inch                                                                                                  225

Over 1/4 inch                                                                                   139

27.       Tape or webbing used to form skirt hem does not extend

across a minimum of 1 gore                                                                  140

28.        Tucks, where section of gore fabric caught in stitching of seams or hems

Up to 1/4 inch wide and up to 1-1/2 inch long                                                        226

Over 1/4 inch wide regardless of length                                          141

Over 1-1/2 inch long regardless of width                                        142

29.       Mismatching of cross seams

First seam from vent over 2-1/2 inches and up to 3 inches                                     227

First seam from vent over 3 inches                                                 143

All other seams over 3 inches and up to 3-1/2 inches                                             228

All other seams over 3-1/2 inches                                                   144

30.       Vent lines out of sequence                                                                     145

31.       Suspension and vent line overlap on canopy

Up to 1/4 inch minus                                                                                               229

Over 1/4 inch minus                                                                        146

Over 1 inch plus                                                                                                      230

32.       Suspension lines not in proper channel or lines crossed                       147

33.       Cut, frayed, or damaged suspension or vent lines                                 148

34.        Variation in suspension line length per set, between vent and skirt

Up to 1/2 percent                                                                                                     231

Over 1/2 percent                                                                              149

35.       Variation in suspension line length between vent and skirt

68