调查人员怀疑高度计故障和无线电干扰导致了一场致命的直升机坠毁。 Investigators suspect a faulty altimeter and radio interference led to a fatal helicopter crash.

调查人员发现，涉及致命碰撞的黑鹰直升机上的高度计可能不准确，飞行员可能没有听到来自控制塔的关键指令。 Investigators found that the altimeter in a Black Hawk helicopter involved in a fatal collision may have been inaccurate, and the pilots might not have heard a key instruction from the control tower. 塔台指示直升机从一架通勤喷气式飞机后面经过，但直升机的录音机中没有听到这个指令。 The tower had instructed the helicopter to pass behind a commuter jet, but this instruction was not heard in the helicopter's voice recorder. 飞行员自己的无线电传输可能挡住了塔台的信息。 The pilots' own radio transmission might have blocked the tower's message.