Pan Pan/mayday
Hi could someone please tell me the difference between PAN and MAYDAY procedures for ATC and local emergency services. In the event of an EFATO most pilots I know tend to put a MAYDAY out straight away and then downgrade (if they remember) to a PAN a bit later on. (I'm talking about the sim at the moment) I'm really curious what is happening on the ground/ATC/local hospitals/emergency services when we put out these calls.