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Parachute Rigger Handbook

FAA-H-8083-17A Version 2015 (Change 1)
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Chapter 7

Repairs, Alterations, and Manufacture

  • Place a mark at the bottom of the confluence wrap and carefully remove the confluence wrap from the riser.
  • Remove the old locking loop.

Reassembly

  1. Cut a new loop the length of the old one plus 2 inches.
  2. Fold the new loop in half and lay alongside the old loop. Transfer the marks from the old loop to the new one. [Figure B]
  3. Align the marks on the loop with the mark at the bottom of the confluence wrap on the riser. [Figure C] Glue the loop in place.
  4. Sew the loop with the 308 zigzag machine. [Figure D] Set the stitch width at approximately 1⁄8 inch and 10 SPI.
  5. Trim the excess loop off at the top. [Figure E]
  6. Reinstall the confluence wrap using the harness machine. [Figure F]
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 2 (source page 7-63).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 2 (source page 7-63).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 3 (source page 7-63).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 3 (source page 7-63).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 4 (source page 7-63).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 4 (source page 7-63).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 5 (source page 7-64).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 5 (source page 7-64).
Main Riser Steering Toggle Velcro® Replacement, procedure photograph 1 (source page 7-64).
Main Riser Steering Toggle Velcro® Replacement, procedure photograph 1 (source page 7-64).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 6 (source page 7-64).
Main Riser 3-Ring Locking Loop Replacement, procedure photograph 6 (source page 7-64).

Inspection

  • Before installing the confluence wrap, make sure the zigzag stitching is complete.
  • The loop length should be the same as the old loop.
  • The confluence wrap must be reinstalled.

Main Riser Steering Toggle Velcro® Replacement

Main Riser Steering Toggle Velcro® Replacement, procedure photograph 2 (source page 7-64).
Main Riser Steering Toggle Velcro® Replacement, procedure photograph 2 (source page 7-64).
  • Applicable products: Most main risers with a Velcro® toggle installation
  • Description: Replacement of the Velcro® toggle keeper on main risers
  • Authorized repairmen: FAA Senior or Master Parachute Rigger
  • Materials: E thread, Velcro® of the appropriate width and type
  • Machines: 301 straight stitch—medium duty 7–11 SPI
  • Equipment: Scissors, seam ripper or scalpel, marking pencil, and 6-inch ruler

Procedure

The term “Velcro®” is used in a generic fashion for hook and loop fastener. While the rigger should replace the Velcro® to match the original configuration. This installation has proven superior for its holding ability and the secure line stow configuration.

Disassembly

  1. Mark the location of the old Velcro®. [Figure A]
  2. Remove the old Velcro®.

Reassembly

  1. Cut a new piece(s) of Velcro® to match the original.
  2. Position the Velcro® to the original location.
  3. Sew the hook Velcro® with a single-needle machine. Sew an additional row of stitching down the center of the Velcro®. [Figure B] This keeps the center from lifting during use and tearing out the edge stitching.
  4. Position the loop line stow Velcro® to match the hook and sew along the edge, overstitching the ends. [Figure C]