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] 10. Use the wallpaper roller to smooth out the patch and  remove any air bubbles from the patch.  [Figure F] •  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. 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] •  Applicable products: All canopies—round and square;  main and reserve 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. 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. Round and Square Canopy—Basic Patch Repair Inspection 7-17