本文件已被宣布为“非现行”。因此，建议本文件不适用于新设计。“非现行”指的是那些以前被广泛引用的文件，并且在一些现有设计中可能会继续需要这些文件。本航空航天标准建立了压力驱动爬升率（垂直速度）指示器的基本最低安全性能标准，主要用于涡轮驱动的亚音速运输机，其运行可能会使仪表受到第3.3节规定的环境条件的影响。本航空航天标准涵盖四种基本类型的直读压力驱动爬升率（垂直速度）指示器，如下所示: I型-每分钟爬升和下降0-2000英尺，II型-每分钟爬升和下降0-3000英尺，III型-每分钟爬升和下降0-4000英尺，IV型-每分钟爬升和下降0-6000英尺。

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 Aerospace Standard establishes essential minimum safe performance standards for pressure actuated Rate of Climb (Vertical Speed) Indicators primarily for use with turbine powered subsonic transport aircraft, the operation of which may subject the instruments to the environmental conditions specified in Section 3.3. This Aerospace Standard covers four basic types of direct reading pressure actuated rate of climb (vertical speed) indicators as follows: TYPE I - Range 0-2000 feet per minute climb and descent, TYPE II - Range 0-3000 feet per minute climb and descent, TYPE III - Range 0-4000 feet per minute climb and descent, TYPE IV - Range 0-6000 feet per minute climb and descent.