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

SA00715SE

Installation of a vortex generators on the wing leading edge and the horizontal stabilizer. Held by Dolan Terrance A.. Last revised July 12, 1999. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
Arctic Aircraft Company Inc.; Arctic Aircraft Company Inc.
Models
S-1B1 (Army XL-6), S-1B1 (Army L-6)
Type certificates
A-754, A-754
On this site
Arctic Aircraft Co Inc S-1 15 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.