5030N
This may assist
CSPT = correct
HEKL = correct = Kloten
FFLP = correct only one airport then
OEJD = correct old airport down town - I lived next door
EAMD = correct
DDRM = correct
TFKF = correct
CSAZ = correct AZ = Azores
Believe you can still check ICAO archives for the changes in the late 50s/early 60s.
Cheers
PS. Some of the various acft regn's still reflect the old code prefixes.