本文件已被宣布为“稳定”，不再接受货币定期审查。用户负责验证参考资料和持续适用性或技术要求。新技术可能存在。此文档已被宣布为非当前文档。因此，建议本文件不适用于新设计。非现行文件是指以前被广泛引用的文件，在某些现有设计中可能会继续需要这些文件。本标准规定了飞行指引仪的基本最低安全性能要求，主要用于涡轮动力运输机，其运行可能会使仪表受到第3.3段中规定的环境条件的影响。本标准涵盖了飞机上使用的飞行控制器，用于通过视觉方式向飞行员指示根据预选飞行计划操作飞机的正确控制应用。

This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist.This document has been declared NONCURRENT. It is recommended, therefore, that this document not be specified for new designs. NONCURRENT refers to those documents which have previously been widely referenced and may continue to be required on some existing designs.This standard establishes the essential minimum safe performance requirements for flight director instruments, primarily for use with turbine-powered transport aircraft, the operation of which may subject the instruments to the environmental conditions specified in paragraph 3.3. This standard covers flight directors for use on aircraft to indicate to the pilot, by visual means, the correct control application for the operation of an aircraft in accordance with a preselected flight plan.