1) Helicopter airline 
Copterline is a Finnish-Estonian helicopter airline, flying a regular 18-minute service on the Helsinki–Tallinn route. Copterline flies an AgustaWestland AW139 helicopter. Copterline OÜ (Estonia) is the flight operator, and FastClass Oy (Finland, former Line Support Oy) is the parent company, which is responsible for maintenance. The predecesso...