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

SA850GL

Superseded by STC SA01944CH. Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index. STC SE693GL approves unleaded automotive gasoline for certain Teledyne engines. Held by Eaa Aviation Foundation, which holds 71 approved modifications in all. Last revised March 5, 2004. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Aeronca Aircraft Corporation
Models
15AC
Type certificate
A-802
On this site
Aeronca 15 162 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 7, 2026.