0057 00  TM 10-1670-287-23&P  DIRECT SUPPORT MAINTENANCE  MC-4 RAM AIR FREE-FALL PERSONNEL PARACHUTE SYSTEM  CONTROL LINES  THIS TASK COVERS:  INITIAL SETUP:  Tools Personnel Required  Follow-Up Procedure  Materials/Parts  Equipment Condition  REPLACE NOTE When replacing control lines, both control lines will be replaced.  1.  Lay out upper control lines at their corresponding attachment loops. Route lines through attachment  loops, adjust in accordance with WP 0005 00 or WP 0006 00 as applicable and secure with a French  locking knot.  92R (10) Parachute Rigger  WP 0005 00; WP 0006 00  Sewing Machine, Bartack (Table 1, WP 0050 00)  Shears (Item 39, WP 0063 00)  Control Line Set, Main (Item 9, WP 0068 00)  Control Line Set, Reserve (Item 9, WP 0069 00)  Thread, Nylon, Size E (Item 43/44, WP 0076 00)  Lay out on packing table or other suitable area.  x Replace  0057 00-1  French Locking Knot Attaching Loop