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

SA09329AC-D

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-761. Held by S-Tec Corporation, which holds 1,083 approved modifications in all. Last revised June 25, 1999. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Extra Flugzeugproduktions- und Vertriebs- GmbH
Models
EA-300L
Type certificate
A67EU
On this site
Extra Flugzeugproduktions-Und EA 300 72 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.