ATC IssuesA place where pilots may enter the 'lions den' that is Air Traffic Control in complete safety and find out the answers to all those obscure topics which you always wanted to know the answer to but were afraid to ask.
Many moons ago a ATC person described what Squawking ident did on their radar screen. But being old I have forgotten . When we push Ident what exactly happens on you radar screen? I think I was told it shows as a highlighted pulse is that correct?. Thanks for your time if you answer any factual info.
It'll depend entirely on the radar display software in use at any particular facility, but every system I've used has displayed an Ident as a flashing ring (for a few seconds) around the SSR position symbol associated with the aircraft.
Just a guess but I would imagine that the readback makes sure the controller knows that it is the correct aircraft that is Identing and not someone who has misheard the instruction.
For example if G-ABCD starts talking but G-WXYZ comes on frequency & interrupts it is entirely possible that G-CD could be asked to Ident but as G-YZ didnt realise G-CD is talking they might wrongly interpret the instruction as being for them and Ident. If theres no readback ATC would then accidentally believe that the RADAR trace for G-YZ is G-CD
Last edited by Burnie5204; 23rd Sep 2012 at 17:34.
For a start the ATCO will know that the addressed pilot has heard the instruction and will action it. No different from reading back a heading which is a turn for identification.
Non-readback (and unsolicited idents for that matter... ) is of no use at all. Non-readback is also laziness, time wasting and discourteous. If the correct phraseology cannot be remembered (Wilco) I'd rather have a "coming down" or a "flash" or a "there you go" or a "Howzat" than nothing at all.