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

SA3-515

Installation of Landes Airglas skis Model L-1500A on main gear and Model L-1200A on nose gear. Held by Airglas INC., which holds 51 approved modifications in all. Last revised August 13, 2012. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
American Champion Aircraft Corp.
Models
7FC
Type certificate
A-759
On this site
American Champion Aircraft 7 Citabria and Champ 429 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.