单机穿云飞行是飞行员必须掌握的技能之一,其最后一个阶段是使飞机沿跑道延长线穿云下降。在这一过程中,由于受侧风的影响以及飞行员保持要素不准等原因,飞机可能会偏离跑道延长线,进而影响安全着陆。所以,飞行员必须要及时地发现并修正偏差,使飞机回到跑道延长线上。复杂气象条件下,无法用目视的方法判断飞机是否在跑道延长线上,偏差的发现和修正一般是借助于领航仪表来实现的。在初教机上,可以借助于两个罗盘——磁罗盘和无线电罗盘;而在安装有航向位置指示器的飞机上,无线电罗盘和磁罗盘指示的角度都可以在航向位置指示器上指示,所以,偏差的发现和修正只需借助这一块仪表进行。完成初教机飞行训练的学员,已经适应了两个罗盘,本文对如何尽快完成从“两个罗盘”到“航向位置指示器”的转化做详细分析。 Single aircraft wearing cloud flight is one of the skills pilots must master, the last stage is to make the aircraft along the runway to extend the line through the clouds down. During this process, the aircraft may deviate from the extension line of the runway due to the crosswind and the inadvertent maintenance of the pilot, thereby affecting the safe landing. Therefore, pilots must promptly find and correct the deviation, the plane back to the runway extension line. Under complicated weather conditions, it is impossible to judge visually whether the aircraft is on the extension of the runway or not. The detection and correction of the deviation are generally implemented by means of a pilot instrument. On the Teach machine, two compasses, a magnetic compass and a radio compass, can be used. On aircraft equipped with a heading position indicator, both the angle indicated by the radio compass and the magnetic compass can be indicated on the heading position indicator Deviations can only be detected and corrected using this instrument. The trainees who completed the training of the pilot aircraft have adapted to two compasses. This paper analyzes in detail how to convert from the “two compasses” to the “course position indicator” as soon as possible.