Field Experience with Type Certificated Civil Aircraft Operated on Motor Gasolines and Worldwide Survey of Motor Gasoline Characteristics

Abstract

The primary purpose of this paper is to describe the results obtained from operating civil type certificated aircraft on automotive (motor) gasoline. The operational information was obtained by the Federal Aviation Administration (FAA) in the course of reviewing aircraft and engine maintenance reports, malfunction and defect reports, and accident and incident reports. Automotive fuel consumption is compared with aviation gasoline in the aircraft operating environment. Proven and perceived factors that may have contributed to the positive and negative results obtained, include the influence of different aircraft fuel systems, the effects of ambient temperature, altitudes, and fuel additives and blends previously, presently, and anticipated to be available. Currently proposed changes in motor gasoline blending and performance characteristics and the impact of the anticipated changes on intermittent combustion powered aircraft engines and aircraft fuel systems are reviewed. The secondary purpose of this paper is to assess the dispensing procedures for motor gasolines that have resulted as the aviation usage of this product has increased for all general aviation airfields and major airports in the United States. These dispensing procedures are reviewed to establish trends anticipated for their effect on the motor gasoline retailer and the airport fueling services presently and perceived to be available. This paper presents a comparison of domestic motor gasolines with those of other countries as an appendix.