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On The Record

机译：在记录上

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While in the traffic pattern between the downwind and base legs, the engine quit. The pilot turned towards the runway, and while turning to line up onto final approach, the airplane experienced an accelerated stall. The pilot recovered to a wings-level attitude but the airplane impacted the runway in a nose-low attitude. Examination of the engine revealed the throttle control arm at the servo fuel injector (fuel servo) was not secured to the throttle shaft, which prevented movement of the throttle shaft with movement of the throttle control. A cotter pin was not installed to secure the castellated nut which secures the throttle arm to the throttle shaft. The mechanic who recently installed the fuel servo failed to install the cotter pin. An additional discrepancy noted was that the left magneto was inoperative. Probable cause(s): The failure of the pilot to maintain airspeed while turning towards the runway after experiencing a partial loss of engine power, resulting in an uncontrolled descent and inflight collision with the runway. A factor in the accident was the failure of maintenance personnel to properly secure the throttle control lever at the servo fuel injector following maintenance.
机译：当处于顺风和基脚之间的交通模式时，发动机退出。飞行员转向跑道，转身进入最后进近时，飞机加速失速。飞行员恢复到机翼水平的姿势，但是飞机以低着头的姿势撞击跑道。发动机检查发现，伺服燃油喷射器（燃油伺服器）上的节气门控制臂未固定在节气门轴上，这阻止了节气门轴随节气门控制装置的运动而运动。未安装开口销来固定将节气门臂固定至节气门轴的带齿螺母。最近安装了燃油伺服器的机械师未能安装开口销。另一个差异是左磁电机不起作用。可能的原因：在部分失去引擎动力后，飞行员在转向跑道时未能保持空速，从而导致飞机无法控制的下降和与跑道的空中碰撞。事故中的一个因素是维护人员在维护后未能将油门控制杆正确固定在伺服喷油器上。

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    《Flying》 |2009年第4期|33-34|共2页
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