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 XIII.  Classification of defects - integrated pack and container (without harness), deployment bag and pocket - MC-4 only.

   Classification         No.                  Defect                                                                                 Major/Critical     Minor

1.         Assembly of grommets

Improperly set, 2 or more exposed teeth (except where grommet is set as specified but is in an area of unequal

thickness that prevents uniform clinching)                               101

Clinched loosely, allowing grommet to rotate in hole                    102

Clinched excessively tight, cutting fabric                                       103

Insecurely clinched, where grommet or washer may

become disengaged                                                                    104

Roll of grommet contains splits, burrs or sharp edges                    105

2.         Seams not constructed as specified in applicable drawing

1 seam                                                                                                                      201

2 seams                                                                                            106

Raw edge exposed                                                                                 107

Open seam                                                                                             108

NOTE:  Seams will be classified as open when one or more stitches joining a seam are broken or when two or more stitches occur.  Conditions repaired by either restitching or overstitching as specified will not be scored as a defect.

202

More than 1 stitch per inch over or under the number specified

Up to 2 inches                                                                                              203

Over 2 inches                                                                       110

Broken or missing stitches                                                              111

2 or more consecutive skipped stitches                                           112

Missing or incomplete stitch pattern (for example, bartack

or cross box)                                                                              113

Backstitch missing                                                                           114

Backstitch short

Less than 1/4 inch                                                                                              204

More than 1/4 inch                                                                    115

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

or hem margins                                                                          116

Tension too loose or too tight

60