根据飞机实际运营的情况,本文介绍了民用飞机减推力起飞常用的等级减推法和灵活温度法,并且与适航实际要求相结合。由于灵活温度法泛用性更好,本文还具体分析了在使用过程中如何确定灵活温度上下限的方法和使用灵活温度起飞的逻辑,可以作为实际运营的参考。 According to the actual operation of the aircraft, this paper introduces the commonly used level thrust reduction method and flexible temperature method for civil aircraft take-off thrust, and combined with the actual requirements of airworthiness. As the flexible temperature method is more generalized, this paper also analyzes in detail how to determine the upper and lower limits of flexible temperature during operation and the logic of using flexible temperature takeoff, which can be used as reference for actual operation.