Heliline Helicopters

There are some informations for winter flying.

Brilliant on line course from NASA

You can order also a book called “NO ICE, THANK YOU”, it is only 5 Euros and is excellent!

Here is is more information for you:

Robinson Safety Notices on Icing 1.
Robinson Safety Notices on Icing 2.
Robinson Safety Notices on Icing 3.

Safety Leaflet - Carb Ice
Safety Leaflet - Winter Flying

Aircraft Icing Handbook.

 I hope this helps.