Maintenance, Repair and Overhaul (MRO)

MRO is the segment that keeps aircraft, engines, and components flying after they leave the factory. It is a $90B-plus global market growing 4 to 6 percent a year, larger than new-aircraft manufacturing for most platforms. The work splits into airframe (heavy C-checks and D-checks), engine (overhaul, component repair), components (LRUs, avionics, hydraulics), and modifications. MRO talent is structurally different from new-build aerospace: the discipline is forensic, the customer is an operator with grounded aircraft costing $100K a day, and the regulatory environment is FAA Part 145 or EASA Part 145. Roles where this matters: Operations, Engineering, Quality, Maintenance.