ASTM D is the major specification covering Aviation Gasoline. and it is anticipated that the Grade 91 will now be removed from ASTM D freeing up. This standard is issued under the fixed designation D; the . last published in Specification D–94 in the Annual Book of ASTM. ASTM D Standard Specification for Leaded Aviation Gasolines.

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UL94 is not intended to be a full replacement for LL but rather is designed d9910 be a drop-in replacement for aircraft with lower-octane-rated engines, such as those that are approved for operation on Grade 80 avgas or lowerD91, or mogas. UL94 meets all of the same specification property limits as LL with the exception of a lower Motor octane number Only later versions of the airframe with different engine cowling and exhaust arrangements are applicable for the automotive fuel STC, and even then require fuel-system modifications.

ASTM D – 17a Standard Specification for Leaded Aviation Gasolines

This page was last edited on 16 Decemberat Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Despite assertions in the media ast, leaded avgas will be eliminated in the USA by at the latest date, the EPA confirmed in July that there is no phase-out date and that setting one would be an FAA responsibility as the EPA has no authority over avgas.

Fortunately, significant history of engines converted to mogas has shown that very few engine problems are caused by automotive gasoline [ citation needed ]. Fuel dyes aid ground crew and pilots in identifying and distinguishing the fuel grades [12] and most are specified by ASTM D or other standards. They began testing “Swift ” in [60] And patented several alternatives for non-alcohol based fuels which can be derived from biomass fermentation. This product should not be used for purposes other than its intended use.


A larger problem stems from the higher and wider range of allowable vapor pressures found in automotive gasoline; this can pose some risk to aviation users if fuel system design considerations are not taken into account.

Friends of the Earth has filed a petition with EPA, requesting that EPA find pursuant to section of the Clean Air Act that lead emissions from general aviation aircraft cause or contribute to air pollution that may reasonably be anticipated to endanger public health or welfare and that EPA propose emissions standards for lead from general aviation aircraft. Inspection Validating the specifications, value and safety of your raw materials, products and assets.

According to their August chart, a number of their engines are compatible with unleaded fuel. This fuel is not currently in production and no refiners have committed to producing it. Samples are easily packaged and shipped to the labs on a global basis. This does not constitute an insurmountable obstacle, but merely requires examination of the fuel system, ensuring adequate shielding from high temperatures and maintaining sufficient pressure in the fuel lines.

The EPA’s own studies have shown that to prevent a measurable decrease in IQ for children deemed most vulnerable, the standard needs to be set much lower, to 0.

Retrieved 3 May The use of unleaded auto fuels with engines designed for leaded fuels can result in excessive exhaust valve seat wear due to the lack of lead. From The Ground Up Millennium ed. Fill portable containers on the ground.

Retrieved 22 April Harmful or fatal if swallowed. By Maythe US Federal Aviation Administration FAA Unleaded Avgas Transition rulemaking committee had put together a plan in conjunction with industry to replace leaded avgas with an unleaded alternative within 11 years.

Send us a request APAC: Archived from the original on 28 February Turbine engines are designed to use kerosene -based jet fuel. Archived from the original on 10 July However, prices are so high that there have been efforts to convert to diesel fuel which is common, inexpensive, and has advantages for aviation use.


Some certificated reciprocating-engine aircraft still require leaded fuels, but some do not, and some can burn unleaded gasoline if a special oil additive is used.

The production economics of this new fuel have not been confirmed but it is anticipated that it will cost at least as much as F910.

Even an average IQ loss of points in children has a meaningful impact for the nation as a whole, as it would result in an increase in children classified as mentally challenged, as well as a proportional decrease in the number of children considered “gifted”.

ExxonMobil Avgas

Avgas is occasionally d90 in amateur auto racing cars as its octane rating is higher than automotive gasoline thus allowing the engines to run at higher compression ratios. Direct conversions to run on automotive fuel are fairly common and applied via the supplemental type certificate STC process. In Europeavgas remains the most common piston-engine fuel. Retrieved 6 November As of [update]82UL is not being produced and no refiner has announced plans to put it into production.

This 94UL meets the d901 specification including vapor pressure but has not been completely tested for detonation qualities in all Continental engines or under all conditions.

SuperCharge Octane Testing for Aviation Fuels

Retrieved 12 May In FebruaryTeledyne D90 Motors TCM announced that the company is very concerned about future availability of LL, and as a result, they would develop a d90 of diesel engines. This grade is generally available in most regions worldwide. Because tetraethyllead is an expensive and polluting ingredient, in leaded avgas the minimum amount needed to bring the fuel to the required octane rating is used; actual concentrations are often lower than the permissible maximum.