CPV code 50211000 designates Repair and maintenance services of aircraft in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
50211000 sits under 50210000 (Repair, maintenance and associated services related to aircraft and other equipment) and groups 3 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.