CPV code 60411000 designates Scheduled airmail transport services in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
60411000 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 60410000 (Scheduled air transport services).