Retired Rolls-Royce/Snecma Olympus 593 afterburning two-spool turbojet model in the Bristol Olympus family, co-developed for the Concorde supersonic airliner by SNECMA (now Safran Aircraft Engines) and Rolls-Royce. Safran records four engines per Concorde with more than 17 tonnes of thrust; the BEA report identifies the production Mk 610-14-28 with reheat. This record remains a model-level identity and does not collapse the broader Bristol Olympus family.