Do remember they had that STC but not how it works.

Could someone help?

Is this it? Try contacting them.
SA2995WE

This certificate issued to:
Mission Aviation Fellowship

STC Holder's Address:
1849 Wabash Avenue
Redlands CA 92374
United States

Description of the Type Design Change:
Installation of an emergency fuel system.

Application Date:


Status:
Amended, 10/12/1995

Responsible Office:
Los Angeles ACO Branch, Tel: +1 (562) 627-5200

TC Number -- Make -- Model:
3A24 -- Cessna Aircraft Company, The -- A185F

As someone with a A185 and who has semi followed the MAF, what is this STC?

Think it was an emergency fuel injection system that using the fuel pump would provide fuel directly to the manifold.

Thx Dogsbody.

I will contact them.