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

SA1786NM

Installation of enlarged rear side window, skylight, left wing 5.5 gallon auxiliary fuel tank, and Cleveland wheels and brakes (as used on the 7ECA). Held by Dave Tatom Aircraft, which holds 5 approved modifications in all. Last revised March 31, 1983. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
American Champion Aircraft Corp.
Models
7AC
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 20, 2026.