Hey there!
First of all, love the aircraft! It's a treat to have something so rare in a flight sim.
My question is - does the transponder work? I typed the code that the ATC specified into the FMC's COM page, but following takeoff, I got booted out of the IFR flight plan after being told repeatedly to reset my transponder. It seems that there's no "on/off" switch for the transponder anywhere in the cockpit. Have I missed a step here?