AVGAS-100LL

Main difference between automobile and aviation gasoline – boil temperature, more accurately, saturated steam pressure. Automobile gasoline is much more easily boiling. The use of such gasoline in an airplane at high ambient temperatures and at high altitude is fraught with the formation of a steam plug in the carburetor. So many bulletins that allow the use of gasoline on a specific type of aircraft, limit the maximum air temperature at which it can be used.

From a technological point of view, aviation gasoline is much more difficult to produce – and therefore more expensive.

Those of the piston automobile engines that are normally designed to work on the AVGAS-100LL, sometimes have a special certificate for application automobile gasoline. But, even with such a document, reasonable persons prefer to pour a mixture into these engines. contentsed from 15% to 50%, gasoline with an octane rating – 92 (depending of engine type, weather and human greed). In summer it’s necessary condition. In practice, the temperature of the cylinder heads jumps. Another danger – now often meets the gasoline with ethanol additives. For airplanes, it is unacceptable because of the low altitude (boiling point of ethanol is lower).

3. Aviation gasoline must accordance the requirements of Annex №5.

24. Aviation gasoline with an octane rating of at least 99,5 and a grade of at least 130 must contents a blue dye.

25. Aviation gasoline must be stable to oxidation and mustn’t contain surfactants and other chemicals in an amount that degrades its properties.

26. Aviation gasoline can contain tetraethyl lead. Aviation gasoline must be only used in aircraft, and the use of this gasoline for other purposes is prohibited.

37. Mandatory confirmation of compliance of aviation gasoline, jet fuel and products for state needs is carried out in the form of mandatory certification in accordance with paragraphs 42 and 43 of this regulation.

41. To confirm the compliance of aviation gasoline and jet fuel, mandatory certification is carried out by manufacturer of its choice by mandatory product certification with testing of a product sample, inspection control of certified products, or by mandatory certification of a batch of products.

43. Mandatory certification of batch of products includes selection, identification and testing of specimen of production of consignment of goods accredited independent testing laboratory, analyze of test results and decision on issuing (refusal to issue) to the applicant the certificate of accordance, issuing the applicant a certificate of accordance, the implementation of corrective actions for violation of compliance requirements and misapplication of the mark treatment.

44. To confirm the compliance of aviation gasoline and jet fuel, mandatory certification is carried out by the seller in accordance with paragraphs 43 of this regulation. Expiry date of the certificate of accordance is 3 years.

Appendix № 5 to the technical regulation “On requirements for automobile and aviation gasoline, diesel and marine fuel, jet fuel and heating oil”.