SA3-69
Remove all deteriorated fabric from the upper surfaces of the wings except for 10" spanwise along the leading edge and 2" spanwise along the trailing edge. 1Apply fabric over the upper surface of the wings, as shown in the sketck on attaohed Form 337. PK screws are used to fasten the tabric to the ribs as on the original installation. Held by Supreme Aircraft Service, which holds 3 approved modifications in all. Last revised July 25, 1957. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.
- Models
- PA-22-108
- Type certificate
- 1A6
- On this site
- Piper PA-22 Tri-Pacer and Colt 2,942 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.