1997年7月10日,在“北大荒”的291农场进行农业飞行作业的一架装活塞式发动机的农五A飞机,在起飞滑跑时,由于飞行员没有将发动机混合比调节器的调节杆推到正确位置,造成发动机贫油,结果输出功率不足,使发动机转速偏低,螺旋桨拉力严重不足。在正常情况下,发动机转速应为2600转/分,而此时却只有2300转/分,从而使飞机滑跑增速明显减慢。由于农场跑道较短较窄,只有500米×15 On July 10, 1997, a Penta A5 aircraft equipped with a piston engine for agricultural operations at Farm 291 on the Great Northern Wilderness was used on take-off and landing as the pilot did not mix the engine with the ratio regulator The adjusting rod is pushed to the correct position, causing the engine to lean. As a result, the output power is insufficient, the engine speed is low, and the propeller is seriously under-tensioned. Under normal circumstances, the engine speed should be 2600 rev / min, but at this time it was only 2300 rev / min, so that the aircraft slowdown significantly slowed down. As the farm run short shorter, only 500 m × 15