"Mxsmanic" wrote in message
...
If I am instrument rated and my aircraft is fully equipped for
instrument flight, and I start out a flight with a VFR flight plan,
and it gets foggy enough that I'm below minimums, is there a way to
switch to IFR in flight, or do I have to have filed IFR from the
beginning? If it's possible in flight, how does it work? Is it
possible to later switch back again?

Yes you can switch between them. Just press the "~" key, and the ATC menu
will pop-up. There will be an option to open a VFR flight plan there.
Oz Lander