The prototype went on to operate as a VIP transport with the French Air Force but no others were built.
[2] It was an all-metal mid-wing cantilever monoplane with twin fins and rudders and retractable tailwheel landing gear.
[2] Work started at Montaudran on two prototypes during the German occupation which were given the designation Bréguet 500 Colmar.
[2] In April 1944 one of the almost completed prototypes was destroyed by the Royal Air Force during a bombing raid on the factory.
[2][3] Plans to put the type into production as the Bréguet 510 Colmar were abandoned, and, after testing, the sole Colmar was delivered to the French Air Force for use as a VIP transport.