N281PR Scaled Composites SC.281 Proteus Northrop Grumman Systems Inc Mojave (MHV / KMHV), USA - California Ken Meegan - 02/03/2006
N281PR Scaled Composites SC.281 Proteus Northrop Grumman Systems Inc Oshkosh - Wittman Regional (OSH / KOSH), USA - Wisconsin Dave Mangham - 31/07/1999
N281PR Scaled Composites SC.281 Proteus Northrop Grumman Systems Inc Cranfield (EGTC), UK - England Roger Syratt - 18/09/2004
