利比亚机场的导航员说，那些劫持者要求得到燃油和飞行路线图，以便前往法国。
The director of the airport in Libya said the hijackers had asked for fuel and flight maps to travel to France.
“收获者”执行飞行作战任务时，导航员既失去了对无人机的“实际控制”，也不能与遥控飞机建立联系并发送控制输入信号。
The Reaper was flying a combat mission when operators lost "positive control" of the UAV, or the ability to establish connections and send control inputs to the remote-controlled aircraft.
自上世纪50年代以来，航空服务一直依赖于地面导航的航道系统，飞机被迫按低效航线飞行，以与空中交通管理员保持联系。
Air travel still relies on a ground-based tracking system from the 1950s, which forces planes to use inefficient routes in order to stay in contact with controllers.
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