.pln flight plans

Hi, is it correct that you cannot load a flt plan when you are in the air?

Example i take off for GA flt, then i decide i want to use a flight plan but its not allowing me to open a flight plan when i am in flight?

You would not be able to do so through the world map no.

Some planes can load directly from Simbrief etc.

Which plane / avionics?

Hi
Aircraft DA 20 Katana Garmin, thank for your reply.

I use Navigraph Charts and create my flight plans in there and download to MSFS (I have also used SIM brief, however don’t see the need for it as Navigraph does the same as Sim Brief).