本航空航天推荐规程确立了主要用于涡轮驱动亚音速运输机的超速警告仪表的性能标准，该运输机的运行可能会使仪表受到第3.4段中规定的环境条件的影响。本ARP涵盖一个机电气动装置，该装置经过校准，以提供控制触点，当指示空速（IAS）达到特定模型飞机的运行极限速度曲线定义的最大值时，该触点可用于操作警告装置。

This Aerospace Recommended Practice establishes performance standards for overspeed warning instruments primarily for use with turbine powered subsonic transport aircraft, the operation of which may subject the instruments to the environmental conditions specified in paragraph 3.4. This ARP covers an electro-mechanical pneumatic device which is calibrated to provide control contacts that can be made to operate a warning device whenever the indicated airspeed (IAS) reaches a maximum value as defined by the operating limit speed curve for the specific model aircraft.