Bob wrote:



In question (a) I wondered if I could keep my hangar airport
as my original point of departure for a week long trip to a
50+ nm new location near my place of residence.

Ini (b) I wondered what happens if I'm flying a long XC to
Oshkosh or California, but don't manage 50 nm of progress
some days. Is the entire flight loggable as XC?


Don't make this more difficult than it has to be. It doesn't matter
where you live, where the plane is kept, where you get gas. If you take
off and then at some point during the flight land at a point that is
more than 50 miles away that is a cross country. Land every 5 miles if
you wish but once you land more than 50 miles from the original point it
becomes a cross country. I personally keep different days flights as
seperate but you could count a 10 day trip, flying each day, as one long
cross country trip for logging purposes.