1.1 该实践提供了计算飞机双浮筒和单船体水载荷的方程。该材料是通过通用航空领域国际专家的公开协商制定的。这些信息是通过关注1、2、3和4级普通类飞机创建的。内容可能适用范围更广；申请人有责任证明更广泛的适用性作为一种特定的合规手段。 1.2 打算将这些信息作为设计批准的合规手段的申请人必须向其各自的监督机构寻求有关其可接受用途和应用的指导（例如，适用CAA发布的指导）。 有关哪些监督机构已接受本标准（全部或部分）作为符合其监管要求的可接受手段（以下简称“规则”）的信息，请参阅ASTM委员会F44网页（www.ASTM.org/Committee/F44.htm）。 1.3 单位-- 以英寸-磅为单位的数值应视为标准。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 4.1 该实践提供了一种确定飞机在水上滑行、起飞或降落时双浮筒或单船体结构载荷的方法。 本规程满足《普通类飞机设计载荷和条件规范》中规定的水载荷要求。

1.1 This practice provides equations for calculating water loads for aeroplane dual floats and single hulls. 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. 1.2 An applicant intended 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 standard (in whole or in part) as an acceptable Means of Compliance to their regulatory requirements (hereinafter “the Rules”), refer to ASTM Committee F44 web page (www.astm.org/COMMITTEE/F44.htm). 1.3 Units— The values stated in inch-pound units are to be regarded as 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. ====== Significance And Use ====== 4.1 This practice provides one means for determining the aeroplane structural loads for either dual floats or single hulls when taxiing on, taking off from, or landing on water. This practice satisfies the water loads requirements set forth in the Design Loads and Conditions Specification for Normal Category Aeroplanes.