4.  If Velcro $^{®}$ is used on the main pin protector flap, be  sure to inspect its condition. If a plastic closing flap  or tongue is used, check for deformation or breakage.  [Figure 5-29] 3.  Check the main deployment system, of which there  are three basic types in use today. The first is a ripcord  similar to the pilot emergency system. The second  type is the throw-out pilot chute (TOP). The third is  the pull-out pilot chute (POP). a.  Next, inspect the main ripcord system. Check  the ripcord and main pilot chute the same as with  the pilot emergency system. Inspect the ripcord  pocket for proper holding of the ripcord handle. b.  For throw-out pilot chutes, inspect the pilot  chute fabric and mesh for holes. Check the TOP  handle at the top of the pilot chute for security,  paying special attention to the tape holding the  handle, which is particularly prone to wear.  Check the bridle attachment to the pilot chute.  If it is of a centerline collapsible design, check  the centerline for wear and stretch and make  sure the length of the bridle is correct. Check  the curved locking pin for wear or damage as  well as the tape, which attaches it to the bridle.  [Figure 5-28]  Check the pilot chute pocket for  fit and wear. Most of today’s installations are  what is known as a “bottom of container” (BOC)  configuration. It is particularly important that the  elastic material from which the pocket is made is  in good condition. A loose pocket can result in a  premature deployment of the main parachute. c.  If repacking a pull-out parachute, check the pilot  chute and bridle in the same manner of the throw- out parachute inspection. Check the lanyard and  handle for wear. 5.  If Velcro $^{®}$ is used on the main riser covers, be sure to  check its condition. If plastic, check for breakage and  deformation. If the plastic is excessively deformed, it  is a sign that the covers do not fit properly and may  open prematurely causing problems. 6.  For the container-closing loop, the same criteria  applies as in the pilot emergency parachute. In  addition, make sure the loop material is the same as  specified in the owner’s manual, especially if an AAD  is installed. With certain AADs, a particular type of  knot and washer to be used is specified as well. Figure 5-29.  Main pin protector flap plastic breakage. Figure 5-28.  TOP bridle with worn pin tape. All the areas mentioned in the pilot emergency parachute  section apply to the sport rig. In addition, some assemblies  utilize a ripcord that has a webbing loop handle or a  pillow-type handle similar to the 3-Ring ® release handle.  [Figure 5-30] It is important that the rigger check these  handles for proper markings and fit to the assembly. Make  sure that there is sufficient slack in the cable to allow no  loading of the pin in any attitude or position that the wearer  may conceivably get into. Most, if not all of these style  handles, utilize Velcro$^{®}$ to secure them to the harness. Make  sure the Velcro$^{®}$ is in good condition for holding ability but  not so much as to inhibit the pull force. Remember, while both the pilot emergency parachute and sport  piggyback assemblies share many areas in common, each has  peculiar requirements for its use. It is important for the rigger  to recognize these and handle each system accordingly. Ripcord 5-18