AM.II.B.K16

From the FAA library

• Aviation Maintenance Technician Handbook - Airframep. 3-6
  Chapter 3: Aircraft Fabric Covering › Other Fabric Covering Materials › Inspection Rings

  reinforce drain holes in the fabric covering. Grommets Grommets are used to create reinforced drain holes in the aircraft fabric. Usually made of aluminum or plastic, they are glued or doped into place on the fabric surface. Once secured ... fabric. Inspection Rings The structure underneath an aircraft covering must be inspected periodically. To facilitate this in fabric-covered aircraft, inspection rings are glued or doped to the fabric. They provide a stable rim around an area of fabric that…

• Aviation Maintenance Technician Handbook - Airframep. 3-6
  Chapter 3: Aircraft Fabric Covering › Other Fabric Covering Materials › Primer

  have been fitted originally with inspection access. Figure 3-8. Inspection rings and an inspection cover. Primer The airframe structure of a fabric covered aircraft must be cleaned, inspected, and prepared before the fabric covering process begins. The final preparation…

• Aviation Maintenance Technician Handbook - Airframep. 3-10
  Chapter 3: Aircraft Fabric Covering › General Fabric Covering Process

  invaluable to the inexperienced technician. Since modern fabric coverings last indefinitely, a rare opportunity to inspect the aircraft exists during the re covering process. Inspectors and owner-operators should use this opportunity to perform a thorough inspection of the aircraft ... concerned, to the method used by the manufacturer of the aircraft being recovered or repaired. Carefully remove the old fabric from the airframe, noting the location of inspection covers, drain grommets, and method of attachment. Either the envelope method…