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 XIV. Classification of defects - harness, riser, bridle line, strap, and lanyard - 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. Stitching

1 stitch per inch over or under the number specified

Up to 1 inch 201

Over 1 inch 106

More than 1 stitch per inch over or under the number

specified 107

Broken or missing stitches 108

2 or more consecutive skipped stitches 109

Missing or incomplete stitch pattern (for example, bartack

or cross box) 110

Backstitch missing 111

Backstitch short

Less than 1/4 inch 202

More than 1/4 inch 112

Tension too loose or too tight 113

3. Kinks in stitching

Less than 1 inch apart 203

More than specified 114

4. Stitch pattern lengths not in accordance with ASTM D 6193 or

applicable drawing 115

5. Defective stitching not repaired correctly 116

6. Needle damage (cuts or chews)

1 cut, warp end 204

More than 1 cut, warp end 117

7. Damage to filling thread over 3/8 inch 118