Flight Plan Alternates
Some FPL questions please, and any references appreciated:-
Do I need to nominate an en-route alternate on my FPL if I MIGHT divert there, or can I expect to just 'drop-in' for a 'splash-and-dash'?
Am I limited (except in emergency) to my nominated destination alternates as per FPL?
Can an aerodrome 'refuse' to accept nomination as a FPL alternate and if so under what conditions?