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 XII.  Classification of defects - pilot chutes for MC-4 and MIRPS

and spring assembly, ejector 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.

More than 1 stitch per inch over or under the number

specified

58