I can offer some limited info.

I was a Dartmouth Officer Under Training in 1977/8 – Pilot.

The airfield was then base to a single Wasp and pilot with ground support crew. The principal role was to provide “air experience” to the all the OUT’s – introducing them used to an aviation environment, dangerous rotating blades, noise and so on. I believe all OUTs were given a short trip in the Wasp as part of this training. We Pilots also had a session there -it involved being winched up and down to/from the Wasp at the airfield and a 20 minute blast across South Devon.:)

For many this was their very first taste of helo flying.

Not sure when it was all closed down.

Visited Dartmouth in 2007 – the cute little tower has been preserved right next door to the park and ride area.