1 They have to wait for clearance from air traffic control.

2 Air traffic has increased 30% in the last decade.

3 The storm caused considerable dislocation of air traffic.

4 Air traffic had returned to normal.

5 Air traffic control lost radio contact with the pilot of the aircraft ten minutes before the accident.

6 Air traffic controllers are threatening to come out on / go on strike.

7 We are cleared by Air Traffic Control to taxi and take off.

8 French air traffic controllers have begun a three-day strike in a dispute over pay.

9 The volume of scheduled flights is straining the air traffic control system.

10 The pilot was given clearance to land by air traffic control.

11 Air traffic control at Heathrow have given us clearance to land in 20 minutes.

12 Analysts fear the overstretched air traffic control system could reach breaking point.

13 It is the international language for air traffic control.

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

15 Flight control warned air traffic of a slight change.

16 We've got air traffic on to it.

17 When air traffic controllers needed even the simplest pieces of equipment,(sentencedict.com) the procurement process took 9 to 12 months.

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

19 And the air traffic controllers and pilots on board asked for autographs.

20 Air traffic control and other facilities could be shared, Coun Mike Hughes, chairman of Warrington's planning committee, said.

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

22 The center handling air traffic in Washington and Oregon, near Auburn, Wash., was operating on backup power.

23 The study says there must be a complete overhaul of air traffic control systems.

24 Such a strategic attack, mounted by cyberterrorists, would shut down everything from power stations to air traffic control centres.

25 Visibility at the city's airport came down to zero,(www.Sentencedict.com) bringing air traffic to a standstill.

26 Pilots and other flight crew immediately come to mind; so too do maintenance engineers and air traffic controllers.

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

28 Mogadishu s transitional government has started talking of reopening the capital s airport and getting its air traffic control back.

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

30 Controllers were demanding doubled wages, improved conditions, and the creation of an air traffic department independent of the Transport Ministry.