Best freeware twin otter?

Best one around. It's the base of most of the others you can find.
d6skyb42.zip
https://flyawaysimulation.com/downloads/files/606/fs2004-project-globe-twotter-dhc6-300-scilly-skybus-g-cbml/

Thank you very much RadarMan!!! 👍

I installed that and I got 2 main folders:
Aircraft
--Dash6_LongNose_SkyBus (this one is the airplane it's self)
--fsfsonv
----dhc6_310
----prosnd22
Gauges (has all the gauges in it)

What do I do with the fsfsonv folder and the 2 folders in it?

Sam,
In the temp window: Put everything into the aircraft folder Then click on it and put everything into the Dash_Longnose_Skybus folder.
Put that into your main aircraft folder. I left the gauges with it, if they don't show up go back and put them into the main gauge folder. (I have a huge amount of gauges in my main gauge folder and am getting to the point of saying no to overwriting).

So I put the fsfsonv folder in the Dash_Longnose_Skybus folder and then put that in the aircraft folder? I'll put the gauges in the gauges folder.

Sounds good, press the "I" key and the right engine will catch on fire, very cool looking,
I uploaded a screenshot of it a while back.

I put it gauges in the gauge folder and it did something wacky. They are the ones that are slanted going across the page.

Everything on FS works eccept the panel and sound, it uses my stearman panel and sound. So I tried to put the fsfsonv folder in the main aircraft folder, but there is already a folder in there with that title.

The fsfsonv folder goes into the Dash_Longnose_Skybus folder.

The reason for the gauges is that you dragged and dropped all into the folder at once, I do that but set the folder to "List" you have it set on "Icons". That's the last button on the tool bar.
Scroll to the far right and drop them.

Ok, I got the gauges problem fixed, but the panel and sounds are still not right.

I don't have it any longer but I think I remember that they said there is a way to alias it to another or use the panel that came with it.
Check all the read-me's that are hidden in the different folders.
I think they gave you a screenshot of the installation also.
Sounds can alway be changes, although they had two sound folders I think. One was the "Wav's" and another the config.

Personaly I prefer the Twin Otter that is painted like a shark. I can't remember its name though.

Pan American,
I have "Shark Air" also. I was amazed and delighted to find it as I have made many skydives out of that airplane. It's based at Perris Valley airport in Perris California. The paint job is duplicated on the model to absolute perfection. Even the tail number is exactly right. Pictures of it can be found on Airliners.net.