SA1191SO
Installation of Aqua Model1500 floats. Held by Outpost X Aviation INC., which holds 15 approved modifications in all. Last revised November 15, 2023. System: airframe structure.
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-18S-"135", PA-18-"135" (Army L-21B), PA-18S, PA-18S-"105" (Special), PA-18"105" (Special), PA-18
- Type certificates
- 1A2, 1A2, 1A2, 1A2, 1A2, 1A2
- On this site
- Piper/Cub Crafters PA-18 46 registered
Piper PA-18 Super Cub 3,620 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.