The Airbus A300-600 is available August 5, in Japan Air System colours.
Bob, the Embraer 145 has been available since July 18, a driveable aircraft.
The steps in the throttle cannot be changed, even in dcc the throttle is in notch increments not continuously variable as a model train controller. Because of the high speed of the aircraft, each step is quite large, as a proportion of the final top speed, a loco with a top speed of 70 kph would have much finer steps. I also do not try to make an engine config to deliver the actual top speed (over 2000 kph for some aircraft) as it would be too difficult to control. So, fine adjustment to speed is not really possible.
However, the acceleration is a function of the aircraft mass entered in the config table, you could change this, for helicopters we found that using the small actual mass prevented the helicopter from accelerating at all, so a larger mass was specified. The engine spec asset also sets an acceleration and braking figure. Having no cars towed behind is actually a help, as the "towed" mass does not vary (nil).
You can vary the trackmark radius to get some difference in stopping point, but this would apply to all aircraft, and the actual stopping position would vary depending on approach speed, mass and the deceleration values in the engine spec. It is not possible to stop a train consistently in one spot for an industry loading for instance, this has been explored with Auran and is a real hurdle for accuracy. This is why Auran made their original oil tanker cars "carry" its own refueling pipe that extended out the side into a concrete wall for unloading, then it did not matter where it actually stopped in the industry. If I could solve this accuracy issue for different train masses and speeds I could release my rotating hopper cars.
http://www.youtube.com/watch?v=kFdJBA0UDxw
The airbridge model is a Kind spline, and not accepted on the Download Station for builds 2.9 and higher. The model would have to be changed to a Kind stitched track with lod and a bit more work, I have not tried any stitched track models yet.
Ian