1.1本规范涵盖回转飞机的制造。本规范包括轻型运动旋翼飞机的设计和性能要求。 1.2本规范适用于以飞行证书、飞行许可证或其他类似文件的形式寻求民航局批准的轻型旋翼飞机。 1.3本规范中的旋翼机定义为仅用于日间VFR的旋翼机，其旋翼叶片在飞行中不是由发动机驱动的，并且在飞行中由单个旋翼上的空气反作用力支撑，当飞机处于水平飞行时，该旋翼在基本垂直轴上自由旋转。 1.4这些要求适用于传统设计的轻型旋翼机。具有以下基本特征的飞机将被视为: 1.4.1具有固定总螺距或总螺距控制且在飞行中不可调的转子， 1.4.2带固定或地面可调螺距螺旋桨的单引擎， 1.4.3不超过两个乘员座椅，以及 1.4.4最大毛重（MGW）为725 kg（1600 lb）或以下。 1.5如果可以证明特定特征在所有重要方面与历史上证明符合本规范的特征相似，并且在其操作方面可以被视为一个单独的实体，则该特征应被视为适用并符合本规范。 1.6如果这些要求不适用于特定的设计和结构特征，则有必要将本规范的适当修订提交给ASTM轻型运动飞机委员会F37，以供审议和批准。 1.7以国际单位制为单位的数值应视为标准。括号中的值仅供参考。 1.8 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This specification covers the manufacture of gyroplanes. This specification includes design and performance requirements for light sport gyroplane aircraft. 1.2 This specification applies to light gyroplane aircraft seeking civil aviation authority approval in the form of flight certificates, flight permits, or other like documentation. 1.3 A gyroplane for the purposes of this specification is defined as a rotorcraft to be used for day VFR only, with rotor blades that are not engine-driven in flight and are supported in flight by the reaction of the air on a single rotor that rotates freely on a substantially vertical axis when the aircraft is in horizontal flight. 1.4 These requirements apply to light gyroplanes of orthodox design. Aircraft having the following basic features will be so regarded: 1.4.1 Rotors of either fixed collective pitch or collective pitch control that are not adjustable in flight, 1.4.2 Single engine with fixed or ground adjustable pitch propeller, 1.4.3 No more than two occupant seats, and 1.4.4 A maximum gross weight (MGW) of 725 kg (1600 lb) or less. 1.5 Where it can be shown that a particular feature is similar in all significant respects to a feature that has historically demonstrated compliance with this specification and can be considered a separate entity in terms of its operation, that feature shall be deemed to be applicable and in compliance with this specification. 1.6 Where these requirements are inappropriate to particular design and construction features, it will be necessary to submit an appropriate amendment of this specification to ASTM Committee F37 on Light Sport Aircraft for consideration and approval. 1.7 The values in SI units are to be regarded as the standard. The values in parentheses are for information only. 1.8 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.