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

SA1109GL

Surrendered and incorporated into STC SA00478CH. Held by Cooper Aviation Supply Company, INC., which holds 79 approved modifications in all. Last revised June 14, 2002. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation; Aeronca Aircraft Corporation
Models
65-TAC (Army L-3E), 65-TAL, 65-TC (Army L-3J), 50-TC, 60-TF, 65-TF, 65-TAF (Army L-3D), 65-TL, YO-58 (Army L-3), 50-TL
Type certificates
A-728, A-728, A-728, A-728, A-728, A-728, A-728, A-728, A-728, A-728
On this site
Aeronca 50 14 registered
Aeronca 65 Chief and Super Chief 377 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.