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Watch out, there's a plane about (ADS-B)

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  • Watch out, there's a plane about (ADS-B)

    Aug 30th 2011, 12:09 by The Economist online

    AIRLINERS and air-traffic-control centres are in the process of adopting a new navigation system, called Automatic Dependent Surveillance-Broadcast (ADS-B), which uses the satellite-based global positioning system to work out where an aircraft is. ADS-B is more accurate than the existing arrangement, which is based on radar and signals from radio beacons, and will supplement it. Among other things, this should make automatic collision-avoidance systems more reliable. The anti-collision equipment currently fitted to jets has already helped make mid-air encounters between airliners rare, but many light aircraft and helicopters are not fitted with such kit. On average there are 12 mid-air collisions between small aircraft in America every year, causing 19 deaths—and a lot more near misses.

    more....................



    http://www.flightradar24.com/54.88,12.09/7#!/about.php
    http://www.airliners.net/aviation-news/ http://www.newsnow.co.uk/h/?JavaScript=1&search=air
    http://www.liveatc.net/search/?icao=EKCH
    http://www.youtube.com/watch?v=xXYBh_ut-fo&feature ...düüüse Im Sauseschritt

  • #2
    They hear a magic set of words and the press go bonkers over it for a while... as ably demonstrated in this piece from 'The Economist' (A little knowledge is a dangerous thing).

    ADS-B has been around now for some years and is very much part of a TCAS-2 installation, in that it allows so-equipped aircraft to interrogate each other via their automated Mode-S interrogations and determine a collision avoidance procedure. This calculation function is undertaken by the on-board TCAS computers and uses the Mode-S, with ADS-B, to manage the inter-aircraft communication, where both aircraft are duly equipped. This results in both the issue of aural commands to the crew of one of the aircraft in a closing scenario, such 'Climb', 'Descend', or indeed 'Do Not Climb' whilst displaying the target aircraft on either the Captain's PFI, or a dedicated IVSI panel instrument (Instantaneous Vertical Speed Indicator - see my Avitar alongside this message), where the outer ring segments turns red and green, visually indicating a desired rate and direction of either climb or descent necessary, in order to avoid a collision, together with coloured icons in the display indicating proximity, direction and vertical separations. The only really notable accident that has occurred between two TCAS-equipped aircraft was over Switzerland some time back, when the Captain of one aircraft determined that his change of altitude instruction must have been an instrument error and waited, regrettably in vain, for clarification from the ATC sector controller, to request an urgent change of flight level. With regret, education of flight crews to accept such directions from an instrument appears to have a long learning curve in some nations.

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    • #3
      Somehow this takes us back to this thread

      WASHINGTON (AP) -- Are airline pilots forgetting how to fly? As planes become ever more reliant on automation to navigate crowded skies, safety officials worry there will be more deadly accidents traced to pilots who have lost their hands-on instincts in the air. Hundreds of people have died over the past five years in


      and reports on f. ex live TV CNN today

      and I say that I didnt look PPrune , but it must be full up
      Last edited by scanhorse; 2011-09-01, 16:43.
      http://www.airliners.net/aviation-news/ http://www.newsnow.co.uk/h/?JavaScript=1&search=air
      http://www.liveatc.net/search/?icao=EKCH
      http://www.youtube.com/watch?v=xXYBh_ut-fo&feature ...düüüse Im Sauseschritt

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