Hi, I dont know whether this is the right forum to post but I just came back from my HKG-CTS trip and noticed that during my outbound flight the handset showed "CTS" as the airport code for New Chitose in Sapporo. But then on my return flight, also on CX, the airport code showed SPK instead.

Does anyone know whether these 2 abbreviations are interchangable or the selection is based on some criteria?

If I remembered correctly, I think during my outbound flight the hanset showed SPK at one time and than later changed to CTS the second time I looked at it..

Alan