The [lights] section has entries for points .6 to .9 which have type assigned but no further info. Points .0 to .5 have unnecessary trailing commas.
The SDK I use, which is the ESP SDK, so may not be accurate in all cases, but seems pretty accurate for FSX, shows the trailing commas in all the entries. I am going to presume until further notice they're supposed to be there for some reason...
The [exits] section is not in accordance with the FSX SDK. Not a problem as the plane comes with it's own stairs and a jetway will never be needed. I see no need for the .2 entry but perhaps future expansion. The 100 entry makes the paratrooper door be removed so quickly it just seems to disappear!
You are 100% (pardon the pun, I couldn't help it...) correct. The exit entries don't have the position or type information, just the opening rate. And 100 does seem awfully overdone. Mayhap they should have been 1.00, and the decimal point was somehow omitted? I wonder why the position and type information was omitted though. Perhaps if they are defined in the .mdl file, they aren't required in the aircraft.cfg? Just a thought.
There are Flaps.1 thru .3 entries which I believe are ignored in this plane. My guess is that they are alternate versions that may be used and this was the easiest way to hide then rather than remarking them out.
Yes. All that information, lift, drag, and pitch, can be defined in the .air file, maybe not easily, but that's where/how I would have done it. I don't know why they were placed in the aircraft.cfg file that way. Even if not correctly defined in the .air file, only one flaps entry is needed to define those values. Perhaps experimental entries for fine tuning or something like that. I'd say see what the dev, Mr. Jahn, has to say about them.
In [contact_points] the Class description identifies 3 as Float points. 3 is actually Skid but they're unused in any event.
Really, that's irrelevant, as those lines are just comments a lot of devs leave in. Whatever they say, though, means nothing to the actual aircraft. Not criticizing, just noting.
I noticed that the engine sound, when viewed from the rear in spot view, seems too low.
Easily fixed in the sound.cfg file. Not really a huge problem...
I don't know how the included ( but not used) .mdls differ.
Perhaps for upcoming, but not yet released, slightly different models for slightly different Paints, something along those lines.
Best I can do, sorry...
Pat☺