SNECMA M53-2 historical turbofan prototype variant used in Mirage 2000 prototype development and flight-test campaigns. Safran records qualification for flight, 5,540 kgp dry thrust (normalized to 54.33 kN) and 9,000 kgp takeoff afterburning thrust (88.26 kN); M53-5 was later derived from M53-2 by modified settings. The exact prototype and aircraft installation boundaries remain separate.