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9. For the 2 × 2 inch patch, peel back one edge of the paper backing and center the tape over the damaged area. Press the exposed adhesive side of the tape to the fabric and smoothly peel the rest of the paper from the fabric with one hand while smoothing the fabric with the other hand. [Figure E] 

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10. Use the wallpaper roller to smooth out the patch and remove any air bubbles from the patch. [Figure F] 

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11. For a double-side patch, turn the canopy or damaged material inside out. Align the second piece of ripstop with the edges of the first and repeat the process. Again smooth out the tape with the roller. 

12. If the patch is to be a temporary one, the repair is complete. If, however, it is to be permanent, it may be advisable to sew around the edge of the patch. In this case, use the single-needle machine and sew approximately 1 ⁄8 inch in from the edge of the tape. Overstitch a minimum of 1.25 inches. [Figure G] 

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NOTE:  Ripstop tape has in the past been a commonly used repair material, on F-111 materials, as a short-term repair. Time has shown, however, that the adhesive used can be detrimental to the strength of the fabric over the long term. Consequently, manufacturers do not recommend its use on certificated canopies. In addition, some of the modern, coated fabrics do not accept the use of the ripstop tape without additional sewing to help hold it in place. If the damage requires the use of a sewing machine to complete the repair, it is required of certified parachutes and advised on non- certificated parachutes to utilize the Parachute Patch method, to perform the required repair. 

## Inspection 

• The ripstop should be centered over the damaged area. 

• The tape should be smooth with no air bubbles. 

• Double-sided patches must be aligned. 

• If sewn, tension, edge spacing, and overstitch must be correct. 

## Round and Square Canopy—Basic Patch Repair 

In 1986, R.D. Raghanti, a Production Engineer working as a Master Parachute Rigger , created a new method of parachute repair utilizing the ripstop box configuration as observed on parachute material during production. By utilizing the material “map” ripstop box lines, he created the process of placing repair patches and confirming material replacement during repairs to match the existing grid and establish proper placement of the repair. This process greatly improved parachute repair techniques and is recognized today by most as the industry standard. 

• Applicable products: All canopies—round and square; main and reserve 

