本通知的目的是提供关于“间隔一般概念小组”（RGCSP）、间隔和空域安全小组（SASP）以及规划和实施区域小组（PIRG）的审查工作的信息，以确定用于应用战略横向偏移的偏移值和程序。这种补偿的目的是缓解由于导航和测高性能的改善而增加的碰撞风险。这种风险增加的原因是全球导航卫星系统（GNSS）的精度和使用有所提高，以及采用了符合最小垂直间隔（RVSM）的测高系统。 本通告面向负责空域管理的民航当局和空中导航服务提供商，以及飞机运营商和机组人员。

The purpose of this circular is to provide information on the work undertaken by the Review of the General Concept of Separation Panel (RGCSP), the Separation and Airspace Safety Panel (SASP), and planning and implementation regional groups (PIRGs) to establish the offset values and procedures to be used in applying strategic lateral offsets. The purpose of such offsets is to mitigate the increasing collision risk resulting from improved navigation and altimetry performance. This increased risk is a result of the improved accuracy and use of global navigation satellite system (GNSS) and the adoption of reduced vertical separation minimum (RVSM) compliant altimetry systems.This circular is aimed at a worldwide audience among civil aviation authorities and air navigation service providers responsible for airspace management as well as aircraft operators and aircrew.