Emerald Scenery Design just released this soundpack that has been under heavy development for the past months.
Chris Britton, the author of this project, dove into this project after his father came into possession of a Bell 47 D-1 and he decided to start this project. Here's the story told by him:
As a scenery developer, this project was a major change (and learning experience) from what I’m use to. In late 2014, my father came into possession of a Bell 47 D-1, (like the M*A*S*H helicopter) which we used to run tours out of our watersports business in Navarre, FL. Last year, it had occurred to me that anyone had yet to make an authentic soundset for Flysimware’s Bell 47 helicopter. Having access to the aircraft on almost a daily basis, I decided to take this dilemma into my own hands and learn the basics of soundpack creation. Over a year, I toyed around with different sound packs, dissected them, read documents, and learned what made everything click. Eventually I was confident enough to take on this project. A few weeks into production I was faced with an issue that brought production to a complete standstill. Luckily, after a week of searching, I was able to travel to and get my hands on a Bell 47 G-2 to finish up the remaining recordings. After a few weeks of editing, I present to you the first authentic Bell 47 soundpack for FSX/P3D. I do hope this addon brings you many hours of enjoyable flight time in your Bell 47! Thank you for your support!!
The presentation video is pretty amazing and the sounds seem of great quality as you can check on the video below.