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.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 - 50 - 51 - 52 - 53 - 54 - 55 - 56 - 57 - 58 - 59 - 60 - 61 - 62 - 63 - 64 - 65 - 66 - 67 - 68 - 69 - 70 - 71 - 72 - 73 - 74 - 75 - 76 - 77 - 78 - 79 - 80 - 81 - 82 - 83

MIL-STD-849B

TABLE IV. Classification of defects - ring slot and ribbon parachute canopies - Continued.

Classification No. Defect Major/Critical Minor

Backstitch short

Less than 1/4 inch 229

More than 1/4 inch 145

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

or hem margins 146

Zigzag stitches with less than 85 percent penetration through

suspension lines	147
Tension too loose or too tight, up to 3 inches per seam		230
Tension too loose or too tight, over 3 inches per seam	148
Kinks, intermittent, less than 2 inches apart		231
Stitch pattern lengths not as specified (stitch patterns up to
5 inches long)
Up to 1/8 inch		232
Over 1/8 inch minus	149
Over 1/8 inch plus		233

35.	Frequency of repair to stitching and splicing on canopies,
	regardless of the number of rows of stitches in the seam
	in excess of that specified below, shall be classified as a
	major defect	150

36. Needle damage (cuts or chews)

Up to 1/8 inch long and 1 per canopy up to 35 feet in

diameter 234

Over 1/8 inch long or more than 1 per canopy up to 35 feet

in diameter 151

Up to 1/8 inch long and 2 per canopy 35 feet in

diameter and over 235

Over 1/8 inch long or more than 2 per canopy 35 feet in

diameter and over 152