1.1 本规范涵盖了飞机紧急降落伞回收系统设计的最低要求。本规范中所述的机身紧急降落伞系统是指设计、制造和安装的降落伞系统，用于以可生存的下降速度恢复机身及其乘员。本规范不适用于深失速降落伞、旋转回收降落伞、droge降落伞或其他机身紧急空气动力减速器，这些减速器并非专门用于将机身和乘员安全降到地面。如果这些类型的降落伞是机身紧急降落伞系统的组成部分，设计用于以可生存下降率恢复机身和乘员，则本规范适用于这些类型的降落伞。该材料是通过通用航空领域国际专家的公开共识开发的。 该信息是通过关注1、2、3和4级普通类飞机创建的。内容可能更广泛地适用；申请人有责任证明更广泛的适用性作为一种具体的合规手段。本文件涵盖的主题包括:强度要求、降落伞测试方法、激活系统、部署系统、降落伞与机身的连接、乘员保护和系统验证。 1.2 打算提出该信息作为设计批准合规手段的申请人必须寻求其各自监督机构（例如，适用CAA发布的指南）关于其可接受使用和应用的指导。有关监督机构已将本规范（全部或部分）作为符合其监管要求（以下简称规则）的可接受方式的信息，请参阅ASTM委员会F44网页（www。 astm。组织/委员会/F44。htm）。 附件A1 将符合本ASTM规范的方法映射到EASA CS-23，修改件5或更高版本，以及FAA 14 CFR第23部分，修改件64或更高版本，适用于飞机紧急降落伞回收系统安装的规则。 1.3 机身紧急降落伞回收系统已成为一种可接受的方法，可大大降低飞行中紧急情况下重伤或死亡的可能性。尽管它们在许多不同类型的条件下挽救了数百人的生命，但由于使用时可能存在无数随机变量（姿态、高度、加速度、空速、重量、地理位置等）的排列，即使设计得当，也存在固有的故障危险。这些变量的组合可能会对这些机身应急降落伞系统的救生功能产生负面影响。 它们被设计成一种安全装置，当被认为提供最佳生存机会时，由飞行员自行决定使用。 1.4 单位- 本文件可采用国际单位制、英制工程单位或两者兼有的形式提供信息；每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.5 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、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers minimum requirements for the design of emergency parachute recovery systems for aircraft. Airframe emergency parachute systems addressed in this specification refer to parachute systems designed, manufactured, and installed to recover the airframe and its occupants at a survivable rate of descent. This specification is not applicable to deepstall parachutes, spin recovery parachutes, drogue parachutes, or other airframe emergency aerodynamic decelerators not specifically intended for safely lowering the airframe and occupants to the ground. The specification is applicable to these types of parachutes if they are an integral part of an airframe emergency parachute system designed to recover the airframe and occupants at a survivable rate of descent. The material was developed through open consensus of international experts in general aviation. This information was created by focusing on Level 1, 2, 3, and 4 Normal Category aeroplanes. The content may be more broadly applicable; it is the responsibility of the Applicant to substantiate broader applicability as a specific means of compliance. The topics covered within this document are: strength requirements, parachute test method, activation system, deployment system, parachute attachment to the airframe, occupant protection, and system verification. 1.2 An applicant intending to propose this information as Means of Compliance for a design approval must seek guidance from their respective oversight authority (for example, published guidance from applicable CAAs) concerning the acceptable use and application thereof. For information on which oversight authorities have accepted this specification (in whole or in part) as an acceptable Means of Compliance to their regulatory requirements (hereinafter the Rules), refer to the ASTM Committee F44 web page (www.astm.org/COMMITTEE/F44.htm). Annex A1 maps the Means of Compliance of this ASTM specification to EASA CS-23, amendment 5, or later, and FAA 14 CFR Part 23, amendment 64, or later, rules applicable to the Aircraft Emergency Parachute Recovery Systems installation. 1.3 Airframe emergency parachute recovery systems have become an acceptable means of greatly reducing the likelihood of serious injury or death in an in-flight emergency. Even though they have saved hundreds of lives in many different types of conditions, inherent danger of failure, even if properly designed remains due to the countless permutations of random variables (attitude, altitude, accelerations, airspeed, weight, geographic location, etc.) that may exist at time of usage. The combination of these variables may negatively influence the lifesaving function of these airframe emergency parachute systems. They are designed to be a safety device and to be used at the discretion of the pilot when deemed to provide the best chance of survivability. 1.4 Units— This document may present information in either SI units, English Engineering units, or both; the values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.5 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. 1.6 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.