jetpipe john
Is it or is it not DSA ? Maybe that's what Peel would like, but I am not sure they can just pick any three letter code of their liking. The IATA database has the airport listed as DCS = Doncaster / Finningley, and it would appear that this has always been the civilian (IATA) code for this airport.
I believe DSA when I see it in the IATA database.
CG