SA720AL
Installation of Schneider model SWS-4000 main wheel skis and Schneider model SWS-1000 tail wheel skis. Held by Schneider Richard J, which holds 33 approved modifications in all. Last revised March 25, 1982. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.
- Models
- PA-20S-"135", PA-20, PA-20S-"115", PA-20-"115", PA-20-"135", PA-20S
- Type certificates
- 1A4, 1A4, 1A4, 1A4, 1A4, 1A4
- On this site
- Piper PA-20 Pacer 323 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 5, 2026.