1.1 本惯例涵盖了对“小型”飞机的系统和设备进行安全评估的国际公认方法。 1.1.1 本标准的制定考虑到了认证级别1、2、3和4正常类别飞机，但其适用性可能更广泛；申请人有责任证明作为特定合规手段的更广泛适用性。对于认证级别1、限于日VFR的低速飞机，本规范的要求仅适用于具有危险或灾难性故障条件的系统和设备。 1.2 设计批准的申请人必须寻求各自民航局(CAA)机构关于将该实践作为认证计划一部分的单独指导。有关CAA监管机构已接受该做法（全部或部分）作为遵守其小型飞机适航法规（以下称为“规则”）的手段的信息，请参阅ASTM F44网页（www.ASTM.org/COMMITTEE/F44.htm），其中包括CAA网站链接。 1.3 以英寸-磅单位表示的值应被视为标准值。本标准不包括其他计量单位。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.5 本国际标准是根据W发布的关于制定国际标准、指南和建议的原则的决定中确立的国际公认的标准化原则制定的世界贸易组织技术性贸易壁垒委员会。

1.1 This practice covers internationally accepted methods for conducting safety assessments of systems and equipment for “small” aircraft. 1.1.1 This standard was developed with certification level 1, 2, 3 and 4 normal category aeroplanes in mind but its applicability may be more broadly applicable; it is the responsibility of the Applicant to substantiate broader applicability as a specific means of compliance. For certification level 1, low speed aeroplanes that are limited to day VFR, the requirements of this practice only apply to systems and equipment that have hazardous or catastrophic failure conditions. 1.2 The applicant for a design approval must seek the individual guidance of their respective civil aviation authority (CAA) body concerning the use of this practice as part of a certification plan. For information on which CAA regulatory bodies have accepted this practice (in whole or in part) as a means of compliance to their Small Aircraft Airworthiness regulations (hereinafter referred to as “the Rules”), refer to ASTM F44 webpage (www.ASTM.org/COMMITTEE/F44.htm) which includes CAA website links. 1.3 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.