室外空气温度是自由空气静止温度， 从飞行温度指示或地面气象源获得， 并根据仪器误差和压缩系数效应进行调整。

A Outside Air Temperature is the free air static temperature, obtained either from inflight temperature indications or ground meteorological sources, a adjusted for instrument error and compressibility effects.

B Outdoor Air Temperature is the dynamic temperature of free air, obtained from flight temperature indications or ground meteorological sources and adjusted for instrumental error and compressibility effects.

C Outdoor Air Temperature is free air stagnation temperature, from fight temperature indicating or ground meteorological resource, and according to the instrument error and compressibility effects to adjust.