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## UNIT MAINTENANCE MC-4 RAM AIR FREE-FALL PERSONNEL PARACHUTE SYSTEM CROSSPORT MAIN OR RESERVE CANOPY 

## THIS TASK COVERS: 

x Patching 

x Searing 

x Replacing 

## INITIAL SETUP: 

## Tools 

Knife, Hot Metal (Item 24, WP 0063 00) Sewing Machine, Double Needle (Table 1, WP 0015 00) Sewing Machine, Light-Duty (Table 1, WP 0015 00) Shears (Item 39, WP 0063 00) Template, Crossport, Oversized (Item 43, WP 0063 00) Template, Crossport, Standard (Item 44, WP 0063 00) 

## Materials/Parts 

Cloth, Nylon, Ripstop, Type I (Item 9, WP 0076 00) Thread, Nylon, Size A (Item 45, WP 0076 00) Thread, Nylon, Size E (Item 43/44, WP 0076 00) 

## PATCHING CROSSPORTS 

1. Lay the rib area out on a worktable. 

## Personnel Required 

92R (10) Parachute Rigger 

## Equipment Condition 

Layout on packing table or other suitable area. 

## Follow-Up Procedure 

Continuity check and canopy trim check 

2. Using basic patching procedures outlined in WP 0015 00, apply the patch to the crossport as required. 

3. Let the new fabric overhang the crossport on the fourth side of the patch. 

4. Using a light-duty sewing machine, sew the patch with two (2) rows of size E nylon thread, 7 to 11 stitches per inch. 

5. Sew a lock stitch on the raw edge side of the patch a minimum of 2-inches on each row. 

<img src='content_image/525514.jpg'>

