Supplemental type certificate · EAA Aviation Foundation
- Holder
- EAA Aviation Foundation · United States
- Status
- Historical · Surrendered
- Status date
- March 5, 2004
- Applied
- January 1, 1990
- Product
- Engine
From FAA DRS. DRS record last changed February 5, 2026.
What it approves
Superseded by STC SE01943CH. Add the following fuel: unleaded automotive gasoline, 87 minimum antiknock index.
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
No AD in this release names this STC Approved models · 3
| Make | Model | Data sheet |
|---|
| Textron Lycoming AVCO Corporation | O-320-A Series | E-274 |
| Textron Lycoming AVCO Corporation | O-320-C Series | E-274 |
| Textron Lycoming AVCO Corporation | O-320-E Series | E-274 |