Heli Air Services is an air operator according to COMMISSION REGULATION (EU) No 965/2012 requirements with its own Continuing Airworthiness Management Organization according to Part-CAMO and Part-M/ and Maintenance Organization according to Part 145 in accordance with Commission Regulation (EU) № 1321/2014.

Heli Air Services JSC Part 145 is EASA 145 approved maintenance organization for Line and Base Maintenance with base maintenance station at Sofia Airport and aircraft type L410 UVP-E20 and Agusta A109 family helicopters.