AUTOMATIC RIPCORD RELEASE, MODEL 451 OPERATION UNDER USUAL CONDITIONS

TM 10-1670-305-23&P AUTOMATIC RIPCORD RELEASE, MODEL 451 0008 00 OPERATION UNDER USUAL CONDITIONS - CONT OPERATING PROCEDURES - CONT a. The parachute system must have an AR2 and power cable assembly correctly installed and routed to the reserve parachute. Ensure that the position of the AR2 in the pocket is the same as when worn by a jumper. b. Open top flap of parachute to expose the reserve ripcord pins. c. Refer to Figure 1. Slide the metal head of the slack checker under the power cable from the right side so the cable slips into the curved groove between the metal head and plastic handle. Engage the two contact points on the hooked end of the slack checker with the mouth of the end fitting of the power cable housing. The slack checker should be held flat against the parachute pack. The two contact points must be engaged at all times to ensure proper inspection. d. Refer to Figure 2. Grasp the slack checker with the right hand, palm down, and with the thumb pressed into the curved recess. Grasp the swaged section of the ripcord pin with left hand. Simultaneously rotate the slack checker and ripcord pin in the directions shown by the arrows. Hold the ripcord pin with the left hand in a fixed position when it becomes horizontally aligned. e. Apply force as necessary to rotate the slack checker until all of the slack in the power cable has been taken up. Ensure that the pin does not slip out of the closing loop of the parachute. Note the position of the swaged end of the power cable eye with respect to the index surface on the slack checker: (1) Refer to Figure 3. If the power cable assembly is correctly routed and installed, and has not been damaged, the end of the eye should not extend past the index surface. WARNING Any amount of extension past the index surface may mean the ripcord pins will not be pulled, which may result in death of parachutist. (2) Refer to Figure 4. If the end of the eye does extend past the index surface, then something is wrong with the cable routing, or the power housing (conduit) may be damaged. The power cable assembly should be removed from service immediately. f. The rigger shall record satisfactory completion of inspection with the slack checker in the main parachute log record book (DA Form 3912). The slack checker test will be annotated in the JUMP, INSPECTION AND REPACK DATA section, in the area marked BAG NUMBER as follows: “SC Test PASS/FAIL”. Change 1 0008 00-8