This is an ok add-on. The sound of the engine isn't what it should be. The Alouette is known for its own, unique sound. This version sounds more like an EC120 to me. Furthermore, the interior is very basic. The freeware version by Bernard Juniot offers a more detailed interior and the sound effects are correct.
The texture of the MSK variant is better though.
So, to be honest, I would consider to wait for MSK to put out a next, more realistic sounding Alouette with a more adequate interior. Price wize... This add-on should be like € 15,00.