Generating Squawks
Hi All.
I have searched the forums on pprune, but couldn't find an answer - apologies if it's a FAQ.
I'm currently training for a CPL in Jerez in Spain, and was wondering if there was any logical code generated by the (Seville I assume) computer for each of my flights. I notice that they normally (always?) start 07xx or 23xx - do ICAO dish out sets of codes to each control area, or is it less strict than that? I guessed the codes weren't going to be random, as there's too much chance of a duplicate, but then wondered what happened on a very long flight, where an aircraft may traverse a number of different areas.
Many thanks in advance for any pointers.
NW3