1.   Air traffic control had lost radio contact with the pilot.

2.   Clash looms over air traffic control Many critics of Railtrack accuse it of putting profits above passenger safety.

3.   It is the international language for air traffic control.

4.   The co-operation of air traffic control is central.

5.   This was not an aircraft taxi-ing down the runway, only to be called back by air traffic control.

6.   We will reduce airport congestion by increasing the capacity of our air traffic control.

7.   When he realized that one engine was not working, the pilot alerted air traffic control.

8.   President Bush has signed into law a series of new air pollution controls, designed to limit harmful emissions from industry and motor vehicles.

9.   They included warning local air traffic control and having hundreds of gallons of water and pumps standing by in case of accident.