You can apply to the FAA to get copies of all the 337's on the airplane. I'd
start there.

Karl
Waikiki Beach

"Al Gilson" wrote in message
...
Our 1964 Skyhawk has a placard by the fuel cap indicating that it is
approved for unleaded auto fuel. However, I don't have any paperwork
showing that it has an STC for autofuel. Any ideas on how I could
research this information? Or...is the placard all I need?

Thanks.

--
Al Gilson
Spokane, WA USA
1970 VW Convertible
1964 Cessna Skyhawk