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

SA73CH

Installation of Wing Strut Fittings, P/N SAR 2-893 or SAR 2-893-1, and stiffeners, P/N 2-5009, in accordance with Safe Air Repair Installation Instructions SAR 2-5007, no revisions, dated April 30, 1993, or later FAA approved revisions. Held by Aero Fabricators CO, which holds 39 approved modifications in all. Last revised April 22, 2005. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.
Models
7AC, 7ACA, 7BCM (Army L-16A), 7CCM (Army L-16B), 7DC, 7EC, 7ECA, 7FC, 7GC, 7GCA, 7GCAA, 7GCB, 7GCBA, 7GCBC, 7HC, 7JC, 7KC, 7KCAB, 11AC, 11BC, S11AC, S11BC, 11CC, S11CC
Type certificates
A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-761, A-761, A-761, A-761, A-796, A-796
On this site
Aeronca S11 9 registered
American Champion Aircraft 7 Citabria and Champ 429 registered
Champion 7 Citabria and Champ 1,452 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 21, 2026.