for a detailed answer...
1: the terminal start- whhen you are selecting your airport, look at the very bottom of the screen, there should be a drop down item labeled "active runway" this can be switched between ANY runway, gate, GA parking, Mil parking, Dock, and helipad. note: not all gates /or parking spots are listed for medium to large airports
2: the engine off option- read above
3: the doors- for default aircraft, press shift + e to open the door. for the Cessna C208 and 208B & all boeings, presss shift + e +2 (quickly, but press 2 after you pressed shift + e) opens the cargo door opposite the pass. door.
note that downloaded aircraft had more doors tied to:
wings folding
tailhook - you will need key commands
water rudders
hope this helps!

Ramos
**EDIT** btw I've never seen Shift + e + 3 or 4 work either
Last edited by legoalex2000 on Tue Jul 26, 2005 4:15 pm, edited 1 time in total.