ASTM D909-01 - 10.12.2001
 
1. Scope

1.1 This test method covers the determination of the knock-limited power, under supercharge rich-mixture conditions, of fuels for use in spark-ignition reciprocating aircraft engines, in terms of ASTM supercharge octane or performance number. By operational considerations, this test method is restricted to testing fuels of 85 ASTM supercharge octane number and over.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.

1.3 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. Specific precautionary statements are given in Annex 7.

 
2. Referenced Documents

D3237-22

Standard Test Method for Lead in Gasoline by Atomic Absorption Spectroscopy

D2268-21(2025)

Standard Test Method for Analysis of High-Purity n-Heptane and Isooctane by Capillary Gas Chromatography

D1193-24

Standard Specification for Reagent Water

Rating Data Sheet Available from ASTM International Headquarters. Order Adjunct No. . Original adjunct produced in 1953.

E456-13a(2022)e1

Standard Terminology Relating to Quality and Statistics (Includes all amendments and changes 4/16/2024).

E344-26a

Terminology Relating to Thermometry and Hydrometry (Includes all amendments and changes 4/21/2026).

Reference Fuel Framework Graphs Available from ASTM International Headquarters. Order Adjunct No. . Original adjunct produced in 1953.

CFR F-4 Form 893

Supercharge Method Aviation Gasoline Rating Unit Operation & Maintenance

CFR F-4 Form 846

Supercharge Method Aviation Gasoline Rating Unit Installation Manual

D4175-24e1

Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants (Includes all amendments and changes 11/19/2024).

D3341-16

Standard Test Method for Lead in Gasoline—Iodine Monochloride Method (Withdrawn 2022)

D4057-22

Standard Practice for Manual Sampling of Petroleum and Petroleum Products

D5059-26

Standard Test Methods for Lead and Manganese in Gasoline by X-Ray Fluorescence Spectroscopy