本通告旨在提供对表面摩擦特性的总体概念性理解 这有助于通过关键的轮胎与地面接触区域控制飞机。其目的是提供广泛而基本的概念，以支持国际民航组织摩擦工作组对附件14——机场，第一卷——机场设计和运行以及附件15——航空信息服务中的标准和推荐做法（SARP）提出的修正案。

This circular aims to provide an overarching conceptual understanding of the surface friction characteristics that contribute to controlling an aircraft via the critical tire-to-ground contact area. The intent is to provide broad and fundamental concepts to support proposed amendments, by the ICAO Friction Task Force, to the Standards and Recommended Practices (SARPs) in Annex 14 - Aerodromes, Volume I - Aerodrome Design and Operations and Annex 15 - Aeronautical Information Services.