PBS Velka Bites, A.S (PBS) is a leading manufacturer of small turbine engines for UAVs and a manufacturer of APUS and air conditioning systems for MI 8/MI 17 helicopters. PBS auxiliary power units (APUs) offer simultaneous supply of electric power and compressed air, starting and operating altitude up to 6,000m, continuous operation for up to 6 hours, easy maintenance and high reliability. PBS jet engines in the power category of 400 -1, 500N provide advanced technology an excellent power to weight ratio, short starting sequence, low fuel and oil consumption.

Motor Sich JSC in one of the world's largest companies in the field of manufacturing after sales support and overhaul of 55 types and modifications of up to date and dependable engines for various fixed wing and rotor wing aircraft.