TM 10-1670-287-23&P  0019 00  UNIT MAINTENANCE  MC-4 RAM AIR FREE-FALL PERSONNEL PARACHUTE SYSTEM  MAIN PILOT CHUTE  THIS TASK COVERS:  INITIAL SETUP:  Personnel Required  Tools Materials/Parts  Equipment Condition  REPAIR REPLACE END OF WORK PACKAGE  0019 00-1/(2 Blank)  Needle, Basting (Item 28, WP 0063 00)  Pilot Chute, Main (Item 1, WP 0065 00)  Thread, Nylon, Size A (Item 45, WP 0076 00) 92R (10) Parachute Rigger  Lay out on packing table or other  suitable area. x Repair  x Replace 1.  Loosen bridle line girth hitch enough so that pilot chute can be passed through loop in end of bridle  line. 2.  Remove bridle line from loop at bottom end of pilot chute.  3.  Pass bridle line through loop at bottom end of replacement pilot chute.  4.  Pass pilot chute through loop at end of bridle line and pull tight forming a girth hitch.  Repair damaged pilot chute canopy material by hand darning holes no larger than  ½ -inch in diameter and  limited to four (4) darns per material for a total of eight (8). Hand darn IAW WP 0015 00.  Replace main pilot chute as follows:  Pilot Chute  Bridle Line Loop  Bridle Line  Pilot Chute Loop Girth Hitch