Order You may go to the airframes or engines lists to see if your airplane type has been tested and if an STC is available to you. Two STC’s are always necessary, one for the engine and another for the airframe. PRICE LIST 91 octane STC Click Here to Order 91 octane STC (except PA-28-160, -161, -180, -181) = $2.00 per horsepower PA-28-160, -161, -180, -181 12/14 Volt = $2750.00 PA-28 24/28 Volt = $4250.00 Cessna 210 fuel vapor return STC = $3650.00 87 octane STC Click Here to Order $1.50 per horsepower If you are not sure if your engine is 87 octane or 91 octane, Click Here. Phone, email, or click here to place a secure order for your STC. Traditional mail works too and we do accept personal checks. We will need the following to process orders: name of the registered owner engine and airframe serial and model numbers aircraft registration number We also need your telephone number, physical address, postal code, and of course your email address. Click here to place a secure order for an STC OTHER ITEMS: Replacement Airframe Placards - $12.50 per pair Replacement Engine Placards - $10.00 each Updating STC paperwork - 87 octane engines - $.75 cents per hp if STC was purchased within the past 20 years. *If the STC was purchased more than 20 years ago, the cost to update is $1.50 per hp Updating STC paperwork - 91 octane engines - $1.00 per hp if STC was purchased within the past 20 years. *If the STC was purchased more than 20 years ago, the cost to update is $2.00 per hp Prices outside the U.S. may vary. Alcohol Tester - $15.00 We include a description of how to test for alcohol along with each STC. It is a simple test and you can easily make your own tester. See directions below. However, we also offer a reusable alcohol tester for $15.00. Testing fuel for ethanol The following test can be performed to determine the presence of ethanol in gasoline. . 1. On a test tube or olive bottle, make a permanent line about two inches from the bottom.   . 2. Fill with water to this line, then fill the tube to the top with gasoline.   . 3. Cover the tube, agitate it then let it stand.   Ethanol mixes with water and the two will separate out together. Therefore, after mixing the water and the gasoline, if the water level appears to have increased, then the fuel contains ethanol and should not be used. Ethanol percentages of less than 5% can sometimes give a reading below the line. Therefore any deviation in the water line should be viewed as grounds for rejecting the fuel. Ethanol fuels can damage the rubber and aluminum components of your aircraft fuel system. Ethanol increases the volatility of fuel, and hence the possibility of vapor lock also increases. Ethanol may vent off at altitude, reducing both range and octane. For these reasons fuel containing ethanol must never be used in airplanes.

Order

You may go to the airframes or engines lists to see if your airplane type has been tested and if an STC is available to you. Two STC’s are always necessary, one for the engine and another for the airframe.

PRICE LIST

91 octane STC Click Here to Order

91 octane STC (except PA-28-160, -161, -180, -181) = $2.00 per horsepower

PA-28-160, -161, -180, -181 12/14 Volt = $2750.00

PA-28 24/28 Volt = $4250.00

Cessna 210 fuel vapor return STC = $3650.00

87 octane STC Click Here to Order

$1.50 per horsepower

If you are not sure if your engine is 87 octane or 91 octane, Click Here.

Phone, email, or click here to place a secure order for your STC. Traditional mail works too and we do accept personal checks.

We will need the following to process orders:

1. name of the registered owner
2.engine and airframe serial and model numbers
3.aircraft registration number
We also need your telephone number, physical address, postal code, and of course your email address.

Click here to place a secure order for an STC

OTHER ITEMS:

Replacement Airframe Placards - $12.50 per pair

Replacement Engine Placards - $10.00 each

Updating STC paperwork - 87 octane engines - $.75 cents per hp if STC was purchased within the past 20 years.

*If the STC was purchased more than 20 years ago, the cost to update is $1.50 per hp

Updating STC paperwork - 91 octane engines - $1.00 per hp if STC was purchased within the past 20 years.

*If the STC was purchased more than 20 years ago, the cost to update is $2.00 per hp

Prices outside the U.S. may vary.

Alcohol Tester - $15.00

We include a description of how to test for alcohol along with each STC. It is a simple test and you can easily make your own tester. See directions below. However, we also offer a reusable alcohol tester for $15.00.

Testing fuel for ethanol

The following test can be performed to determine the presence of ethanol in gasoline.

.1. On a test tube or olive bottle, make a permanent line about two inches from the bottom.

.2. Fill with water to this line, then fill the tube to the top with gasoline.

.3. Cover the tube, agitate it then let it stand.

Ethanol mixes with water and the two will separate out together. Therefore, after mixing the water and the gasoline, if the water level appears to have increased, then the fuel contains ethanol and should not be used. Ethanol percentages of less than 5% can sometimes give a reading below the line. Therefore any deviation in the water line should be viewed as grounds for rejecting the fuel.

Ethanol fuels can damage the rubber and aluminum components of your aircraft fuel system. Ethanol increases the volatility of fuel, and hence the possibility of vapor lock also increases. Ethanol may vent off at altitude, reducing both range and octane. For these reasons fuel containing ethanol must never be used in airplanes.