October 1, 1976 with a new larger prop and aerodynamic cleanup by Beech made it 6 knots faster than the "B" . Operators Military operators Algerian Air Force (4 x B24R Sierra); no longer in service Canadian Armed Forces (24 x B23 and 24 x C23 Sundowners, designated as CT-134) until 1992 when they were replaced by Slingsby T67 Firefly Royal Hong Kong Auxiliary Air Force (2 x B23-19); retired in 1993 with disbanding of RHKAAF with GFS ordering Slingsby T67 Firefly Mexican Air Force (20 x A23-19); all retired Royal Moroccan Air Force (1 x 23); no longer in active service Specifications A23A Musketeer Custom III See also References External links Airliners.net Musketeer page Musketeer 1960s United States civil utility aircraft 1960s United States civil trainer aircraft Single-engined tractor aircraft Low-wing aircraft Aircraft first flown in 1963