目前飞机通信选址报告系统使用国际民航专用的（）通信频段。

GABCD, （ ） downwind one mile to give room for a departure.

We＇ve got to turn round due to bird strike, engine No.2 is （ ） .

（ ） at minima, overshooting.

We have undercarriage trouble, we＇d like to （ ） .

Takeoff aborted, engine NO.2 was low on （ ） .

We＇ve just been struck by （ ） and we＇ll have to go back the apron to check our electrics.

There are already 3 aircraft （ ） at the holding point of 12.

There＇s no taxiway available, so you＇ll have to turn at the end of the runway and （ ） .

Which word has nothing to do with the problems caused by snow on an airport?

Before an aircraft can taxi out, the chocks will have to be （ ）.