Autofuel STC

[Richard Boyer]

Re: Autofuel STC

That is the funny thing that drives me nuts about STC's like this...."These engines were built to use this fuel". Even the STC says that our engines originally ran on Unleaded fuel! So, we have to re-invent the wheel again to prove that they run on a fuel that they were originally built to run on.....

oh well, such is life.

I think what I will do is put the EAA stickers on my wing tanks and have a nicer sticker made for the nose tank. (same verbage). That should be fine, right?

Richard Boyer
N95791
Georgetown, TX

[lktiller]

Re: Autofuel STC

better get the IA to pre-approve any deviation from the supplied sticker.

Another thought. It is a requirement that a COPY of the STC is carried in the plane along with the Operator's Manual. Aircraft is not airworthy without it!!!

[Hank Jarrett]

Re: Autofuel STC

OK, That's funny too. I looked at my copy of the STC from EAA last night and there was some info on what the markings should say but there was no sticker or plackard provided. Did some of you guys with the EAA STC get a pre made sticker? Could you scan it so I can print a copy?
Hank

[lktiller]

Re: Autofuel STC

This is getting interesting (and fun, too)
Petersen states that: Placards differentiate between those airplanes that are or are not capable of using it.

Also from Petersen:
Installing the STC makes it possible for you to use an octane different than what was called for on the original Type Certificate while remaining in compliance with FAA regulations. Insurance companies expect you to be in compliance with the FAR's and we are able to contact you if we become aware of any changes in the fuel which could effect your airplane

1st, can't even be concerned with the TC and octane rating. They don't make the same fuel as listed. (NOTE: 80/87 is a minimum octane rating for low compression engines, higher is ok/approved)

FAA regs say follow the STC instructions.

http://www.webworksltd.com/autofuelstc/pa/faa.html

Insurance co. says follow FAA regs.

All this leaves the IA a lot of leeway for interpretation.

Again this note from Petersen:
An IA mechanic must "install" the STC by adding the new fuel placards and an engine placard. He then fills out a log book entry and form 337.

I can find all sorts of places that say the decal is REQUIRED. One site said (to paraphrase) if the placard is in conflict with the STC, then the current placard overrules. Don't know if that is supported in the FAA regs because no chapter & verse was quoted.

Still don't know why one shouldn't create their own decal. but consider this. A replacement from the EAA is only $4.50, from Petersen $12.50.

[selje]

Re: Autofuel STC

The EAA placard for placement near fuel inlets was modified to include 82UL fuel. The new placard is required by August 1, 2000. See link below for wording.

http://www.eaa.org/education/fuel/bulletin_2000-1.html

[Robert Lees]

Re: Autofuel STC

A friend has a 1936 Bentley open tourer. When I asked "Why use unleaded?" he replied "When this car was built, ALL fuel was unleaded".

So I asked: "Can you run it on leaded fuel?"

He said "Does it contain Octane?"

"Of course it does"

"Then it'll run".

My 1945 Taylorcraft has an engine designed in the thirties (or before?), and now in the 21st century, I run it exclusively on 100LL, and have done so for over 600 hours. The previous owner did 300 hours on 100LL.

My other Taylorcraft (a modern one, you understand, it was built in 1946 ) has operated whilst in my custody for over 3000 hours exclusively on 100LL (with one overhaul, still the same engine).

Now I dare say that over the years, various valves have been replaced with those having stellite inclusions, and various seats have been re-seated, but I personally have had no problems with running the A-65 on 100LL.

Just my opinion.

Occasionally put in some MMO to clear a sticking valve. Happened to me twice.

Rob

All of the above written in the knowledge that I operate in the UK, not the USA

[Jim Herpst]

Re: Autofuel STC

Gary, Yup Understand your position and logic. Thanks for wanting to clarify.