base changes
According to cos99 and CD (to whom I spoke on this very subject) you can change bases anytime within home ports ie JFK to ATL or ORD etc and between home ports ie LHR to CDG or LHR to JFK...no time restriction and does not reset your 3 year freighter clock prior to pax base bid...all possible as long as you do not want to change a/c type...ie 400 to 400 is OK....of course all subject in part to Cptn Cannots stamp of approval...not sure of cos08 but then who is!
hope this helps