8/13/2023 0 Comments Pilot atc communicationsATC can then use this to send us instructions relating to changes in our altitude, heading, speed and radio frequencies. The communication element of FANS, CPDLC connects the aircraft with ATC units on the ground. Controller pilot datalink communications (CPDLC) However, it has a relatively slow rate of data transfer of just 2.4k bps, meaning that there can be some lag between messages being sent and received. As it uses satellites to create a network, it can be used beyond-line-of-sight communications such as very high frequency (VHF) radios. It comprises of two main operational components, one for communicating and one for surveillance.įANS is a globally used system that works well over long distances. ![]() Future air navigation system (FANS)įANS was developed nearly 30 years ago by Boeing and later adopted by Airbus. There are two types of datalink available - future air navigation system (FANS) and aeronautical telecommunications network (ATN). The Points Guy will not share or sell your email. I would like to subscribe to The Points Guy newsletters and special email promotions. Read more: How pilots deal with fuel leaks With clear, concise written instructions on a screen in front of pilots, the chance of errors reduces. It also increases the accuracy of communications, reducing the chance of heavily accented words being misunderstood. This, in turn, increases the number of aircraft that can safely fly through a particular section of airspace. ![]() It relieves congestion on ATC frequencies and, as a result, reduces controller and pilot workload. The benefits of datalink communications continue to grow as technology advances. It’s known as controller pilot data link communications (CPDLC). The use of a text message-based system nullifies all these problems, not only increasing flight safety but ATC efficiency as well. Accents can sometimes be difficult to understand and mistakes can be made as a result. In addition, you may have a pilot and a controller from two different countries communicating in a language which isn’t their first - English. One aircraft replying to the call meant for another aircraft, pilots missing a call meant for them and multiple transmissions being broadcast at the same time are all common events on a busy frequency. With more aircraft comes increased radio transmissions and the increased chance of mistakes being made. As airspace begins to get busier again, more aircraft are being handled by individual controllers. However, when away from the frenetic lower altitudes, an instantaneous reply isn’t quite as important. CPDLC has multiple benefits for both pilots and controllers.
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