ASTM F2538  Standard Practice for Design and Manufacture of Reciprocating Compression Ignition Engines for Light Sport Aircraft
ASTM F2538轻型运动航空器往复式压缩点火发动机设计和制造用标准规范
This practice provides designers and manufacturers of engines for light sport aircraft design references and criteria to use in designing and manufacturing engines.
Declaration of compliance is based on testing and documentation during the design and testing or flight-testing of the engine type by the manufacturer or under the manufacturer's guidance.
1. Scope
1.1 This practice covers minimum requirements for the design and manufacture of reciprocating compression ignition engines for light sport aircraft, Visual Flight Rules (VFR) use.
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)
RTCA Documents
FAA Documents
FAAAC33.28–2 Guidance Material 14 CFR 33.28 Reciprocation Engines, Electrical and Electronic Control Systems
Index Terms
light sport aircraft; reciprocating compression ignition engine; Reciprocating compression ignition engine; Light sport aircraft (LSA);