 The enhanced RDY-2 has a slightly greater range and adds a SAR mode.Development began in 1984, with the first of nine prototypes flying in July 1987 in a Mystère 20, and the first delivery of a production set in December 1994.RDY is the standard fit on the Mirage 2000-5,-5Mk2 (RDY-2) and -9 (RDY-2) aircraft and has been retrofitted aboard 37 French Air Force Mirage 2000Cs (aircraft to Mirage 2000-5F standard; 11 aircraft redelivered during 1998, 22 during 1999), 25 Greek Mirage 2000-5 Mk2 and 62 United Arab Emirates' Mirage 2000EAD/DADs.