After the B58 came out, I set this up as my default after shutting everything down,.....then with the B90, I changed the plane to the B90, and now made this the "default"............but am having so problems now with the ATC with the clearance commands.............SO, how do I get FSX to delete this new default so I can start from scratch and THEN select the B90, then shut it down, then set as the new "default"??..........the learning info does not cover this item............many thanks B42L8

You should always start FSX with a basic defaut plane like the Trike or the 172 to avoid problems with add ons. Just start the flight, switch to the Trike or the 172 and save the flight as default flight.