Safran RTM322 turboshaft family, developed through the Rolls-Royce Turbomeca programme and now supported by Safran Helicopter Engines. It delivers 2,100–2,600 shaft horsepower for ten-to-fifteen-ton helicopters and is installed on NHIndustries NH90, Leonardo/AgustaWestland AW101/EH101 Merlin, and WAH-64D Apache fleets. Current support and in-service use are documented; exact -01/9 and other dash variants, vehicle relationship edges, and lineage alternatives remain separate records.