The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · issued

SA02002SE

Installation of vortex generators on the above model aircraft. Held by Micro Aerodynamics INC, which holds 77 approved modifications in all. Last revised May 22, 2009. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; FS 2001 Corp.; FS 2001 Corp.; FS 2001 Corp.; FS 2001 Corp.; FS 2001 Corp.; FS 2001 Corp.
Models
J3C-40, J3C-50, J3C-50S, J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)), J3C-65S, PA-11, PA-11S, J4, J4A, J4A-S, AE-1, HE-1, J5A-80, J5A (Army L-4F), J5B (Army L-4G), J5C
Type certificates
A-691, A-691, A-691, A-691, A-691, A-691, A-691, A-703, A-703, A-703, A-725, A-725, A-725, A-725, A-725, A-725
On this site
Piper J-3 Cub 3,806 registered
Piper J4 Cub Coupe 197 registered
Piper J5 Cub Cruiser 294 registered
Piper PA-11 Cub Special 443 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 7, 2026.