Excellent info on this important and "not widely understood" aspect of working with FS airports. :( Jim:Is this inability to change ICAO code with a pre-load airport "stub" BGL true of FSX default airports as well ? :( Martin:My humble apologies for not previously being aware of this limitation with airports; I now better understand the occasional need to edit an AP*.BGL. :( Many thanks for bringing this info to light through your thread of inquiry ! B) Regards,GaryGB

Thanks for the input everyone - I hope you all had a great Xmas,Martin