0027 00  TM 10-1670-287-23&P  UNIT MAINTENANCE  MC-4 RAM AIR FREE-FALL PERSONNEL PARACHUTE SYSTEM  CROSSPORT MAIN OR RESERVE CANOPY  THIS TASK COVERS:  INITIAL SETUP:  Tools Personnel Required Equipment Condition Follow-Up Procedure  Materials/Parts  92R (10) Parachute Rigger  Layout on packing table or other suitable area.  Continuity check and canopy  trim check 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)  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) x Patching x Searing  x Replacing 1.  Lay the rib area out on a worktable.  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.  0027 00-1  PATCHING CROSSPORTS  Crossport Fourth Side of  Patch