1.1 本规程提供了当申请人使用这些指示来支持符合适用于正常类别飞机的失速特性、失速警告和旋转要求时，如何向责任机组成员提供增强指示的方法，使用规范 F3180/F3180M . 1.2 规范中确定的增强显示的具体类型 F3180/F3180M 具体如下: 类型 描述 攻角 攻角指示 攻角 带有趋势标记的攻角指示 螺距限制 姿态指示上显示的俯仰极限指示 动态低速标记 指示的空速标记随飞行而变化 条件 空速趋势 指示空速趋势标记显示在空速上 指示 飞行轨迹标记 飞行轨迹标记显示在姿态指示上 LOC警报 趋势窗口内可能失控时发出警报 1.3 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的指导（例如，适用民航局（CAA）发布的关于其可接受使用和应用的指导）。有关监督机构已将此做法（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.org/Committee/F44.htm）。 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。 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。 ====意义和用途====== 4.1 本实践的目的是讨论低速感知增强指示的显示或功能特征，或两者兼而有之。 4.2 本规程中的信息可用于开发增强指示，该指示是使用规范的正常类别飞机合规方法的一部分 F3180/F3180M 、失速警告和规格 F3117/F3117M .

1.1 This practice provides methods for how Enhanced Indications are provided to the responsible crewmember when an applicant uses these indications in support of compliance with the requirements for Stall Characteristics, Stall Warning, and Spins applicable to Normal Category Aeroplanes, using Specification F3180/F3180M . 1.2 The specific types of enhanced indications identified in Specification F3180/F3180M are as follows: Type Description Angle of Attack Angle of attack indication Angle of Attack Angle of attack indication with trend marker Pitch Limit Pitch limit indication displayed on attitude indication Dynamic Low-Speed Markings Indicated airspeed markings that change with flight condition Airspeed Trend Indicated airspeed trend marker displayed on airspeed indication Flight Path Marker Flight path marker displayed on attitude indication LOC Alert Alert issued when loss of control likely within trend window 1.3 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 civil aviation authority (CAA) concerning the acceptable use and application thereof. For information on which oversight authorities have accepted this practice (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). 1.4 Units— This document may present information in 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. ====== Significance And Use ====== 4.1 The purpose of this practice is to discuss display or functional characteristics, or both, of enhanced indications for low-speed awareness. 4.2 The information in this practice may be used in developing enhanced indications that are part of the compliance approach for Normal Category Aeroplanes using Specification F3180/F3180M , Stall Warning, and Specification F3117/F3117M .