Material base

Robinson R44 is a light multipurpose four-seater commercial helicopter manufactured by an American company "Robinson Helicopter".

The helicopter was developed in the 1980s. It made its first flight on March 31, 1990 and was certified in December 1992.

Since 1999, the R44 has been recognized as the best-selling general-purpose helicopter in the world. In 2000-2017, 5,805 helicopters were produced, which also makes it the most popular helicopter in the 21st century

Robinson R66 is a light multipurpose five-seater commercial helicopter manufactured by Robinson Helicopter, USA. 

The helicopter was developed in the 2000s. Made its first flight on November 7, 2007. The Robinson R66 is a gas turbine helicopter designed and built by the Robinson Helicopter Company. It has five seats and a separate cargo compartment, has a Rolls-Royce RR300 (or Rolls-Royce RR250-С300 / A1) turboshaft engine. The R66 was certified by the US Federal Aviation Administration (FAA) on October 25, 2010. Deliveries began in November 2010

Eurocopter EC130 is a single-engine light helicopter. 

Created by Eurocopter. The first flight took place in 1999. 
Built using composite materials. Available in several modifications. 

The EC130 has a special multi-bladed fenestron (propeller in a ring), which is installed instead of the traditional tail rotor as on the base AS 350. This fenestron has irregularly spaced blades, as well as an increased angular speed of rotation (which simultaneously reduces vibrations) when compared with an ordinary open rotor

Eurocopter AS350 "Ecuray" (from French - "squirrel") - French multipurpose helicopter. 

Developed by a French company "Aerospatiale" (fr. Aerospatiale, now called Eurocopter). It made its first flight in 1974; in total, more than 2000 helicopters were produced by 2001. During this time, it was repeatedly modernized. 

This single-engine aircraft is marketed in the United States under the name "AStar", and a twin-engine under the name "TwinStar" (eng. TwinStar - double star). Produced in Brazil under the name "Eskilu" (port. Esquilo - squirrel) under a license from Helibrás.

Developed by the American company Bell Helicopter Textron, the Bell 206L-4 LongRanger helicopter was used as a base model. 

The Bell 407 helicopter became famous for its record round-the-world flight, the route of which passed through both poles of the Earth. With two crewmembers, the machine took off from Fort Worth Airport (Texas) on December 5, 2006 and returned back on March 23, 2007. In 189 days, more than 57,900 km were covered, several dozen landings were made, including at the South and North Poles. The net flight time was 300 hours.