ATC Issues A 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.

Squawk Codes

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Old 11th Feb 2010, 10:13
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Join Date: Mar 2001
Location: I wouldn't know.
Posts: 3,731
@HD, the field trials were only allowed to start when the failure rate of entered call signs dropped below 1%. Allocation via the hex adresses is pretty much impossible as there is no central hex adress database, each CAA has its own adress pool and manages it on its own. So callsign it is.
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