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Air traffic controllers

Air traffic controllers in all parts of the world must expect to learn English, as this is the official international language of aviation. All conversations between the ground and planes should be in English to avoid any possibility of misunderstandings. Failure to use English can cause ground incidents and mid-air collisions.

All flights depend for their safe departure and arrival on hundreds of people on the ground who monitor their progress and instruct their pilots on take-off and landing.

While a plane is on the ground, its movements are directed by a ground controller. The control tower is situated on the airport. Air traffic controllers help planes to approach the airport, land and take-off. Aerodrome controllers accept incoming planes from controllers in the control centres and make sure that the planes are spaced out at safe intervals.

After a plane has landed, the flight crew are told by the controllers in the tower where to turn off the runway. The controllers are aided by radar which gives a picture of the whole airport.

Controllers watch the plane as it taxis towards the runway, making sure it keeps clear of other aircraft on the ground. Permission to take-off is given from the tower. After the airliner has taken-off it is handed over to area controllers.

13 Exercise 3.

Controller-pilot data link communication

In mainline operations, communication is the next 'big thing’ in terms of upgrades, especially regarding CPDLC data link communications to replace voice transmission.

The constant increase in the world’s air traffic demands that air traffic control should have more complex and reliable equipment and new and improved methods and procedures.

As any air traffic controller will tell you, communications are the most important part of the ATC equipment suite. Clear and reliable contact with pilots, emergency services and other ATC facilities are required to keep operations running safely and smoothly. Without high quality and reliable communications, flight safety cannot be assured.

Air-ground data link implementation is undergoing remarkable growth. The emphasis nowadays is on reducing congestion in the VHF radio spectrum and on reducing absolute reliance on voice communication, a medium that has a considerable risk of ambiguity and misunderstanding. The efficiency and reliability of data link provides the solution.

14 Exercise 4.

Free flight

The Federal Aviation Authority of the USA is embarking on a major project to modernize the air traffic control system. The FAA plans for communications, navigation, and air traffic surveillance to be handled by satellite. Sophisticated computers will help the controllers manage the flow of air traffic.

Pilots will be able to select their own routes and altitudes and will be able to modify them at will. The new system will monitor each aircraft and will alert the pilot and controller to any possible conflicts. The pilot and controller will then work together to determine a solution. This method of air traffic control is known as free flight, and is planned to become the standard in the United States by the year 2010.

15 Exercise 5.

One Sky – global air traffic management”

The moniker `One sky...global ATM' is IATA's vision of the evolution of ATM from cur­rent practice to a future that is safer and more efficient. It is fundamentally aligned with the ICAO ATM Operational Concept.

The International Air Transport Association (IATA) - the industry asso­ciation that represents the majority of the world's international airlines - has developed One sky... global ATM to present IATA's vision of a future inte­grated global air navigation system.

Achieving this vision will result in safety and environmental benefits, and increased system efficiency with the lowest overall cost for the ATM com­munity - including the airlines - through operational improvements, efficiency, avionics equipage and equi­table user charges. One sky...global ATM is a unique challenge. It calls on the entire ATM community to act as real partners where the success of one segment of the community is linked to the success of aviation at large.

The Single European Sky (SES) has been proclaimed as a solution to many of the problems that airlines complain about in relation to ATM. Certainly the aims of the SES project tackle issues that are close to the heart of many airlines – reducing delays, improving safety and making the European ATM system more efficient. The project is now a reality, the draft regulations will define the future ATM system.

16 Exercise 6.

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