国内RVSM空域，如出现紧急情况，机组在无法联系到ATC时，应? What should pilot do if the fl

国内RVSM空域，如出现紧急情况，机组在无法联系到ATC时，应? What should pilot do if the flight crew does not contact ATC in case of emergency situation in RVSM airspace?

A.左转90度，偏离航线20海里 Left turn 90 degrees and offset 20NM from the original route

B.右转90度，偏离航线15公里 Right turn 90 degrees and offset 15NM from the original route

C.左转30度，向前飞行15海里 Left turn 30 degrees and and proceed with the new heading 15NM

D.右转30度，向前飞行20公里 Right turn 30 degrees and and proceed with the new heading 20KM

正确答案是D