ASTM D6424 - 04a(2010)

    Standard Practice for Octane Rating Naturally Aspirated Spark Ignition Aircraft Engines

    Active Standard ASTM D6424 | Developed by Subcommittee: D02.J0.01

    Book of Standards Volume: 05.03


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    ASTM D6424

    Significance and Use

    This practice is used as a basis for determining the minimum motor octane requirement of naturally aspirated aircraft engines by use of PRFs.

    Results from standardized octane ratings will play an important role in defining the actual octane requirement of a given aircraft engine, which can be applied in an effort to determine a fleet requirement.

    1. Scope

    1.1 This practice covers ground based octane rating procedures for naturally aspirated spark ignition aircraft engines using primary reference fuels.

    1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D2700 Test Method for Motor Octane Number of Spark-Ignition Engine Fuel


    ICS Code

    ICS Number Code 75.160.20 (Liquid fuels)

    UNSPSC Code

    UNSPSC Code 15101504(Aviation fuel)


    DOI: 10.1520/D6424-04AR10

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