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.