Well, if you're interested to know why you were able to put an F4 into orbit is that Orbiter by default doesn't model aircraft engines which is dependent on the oxygen in the atmosphere to work. So Orbiter doesn't simulate engine flame-outs that would occur on a normal aircraft at high altitude.
Since that F4 is most likely a Spacecraft*.dll implementation, it will use the only propulsion type Orbiter knows: rocket engine propulsion where both the fuel and oxidizer is carried in on-board tanks.
If you want standard aircraft engines(propeller, turbofan and jet), you'll have to code it yourself. Although there is a Aircraft.dll which similar to Spacecraft.dll but for aircrafts, it has never been updated to any recent Orbiter versions: [ame="http://www.orbithangar.com/searchid.php?ID=347"]AircraftDLL[/ame]