FS2004/FSX Fairey Firefly Mk1a flight2000it 15 years ago FS2004/FSX Fairey Firefly Mk1a Warbird Repaints. You get two versions of the Firefly Mk1. The MB581 is a Royal Navy version and PP431 was flown by the Royal Canadian Navy. These repaints are done by “Morton”. Gmax model by A.F. Scrub. 5 Mb FS2004/FSX Fairey Firefly Mk1FS2004/FSX Fairey Firefly T Mk2 Warbird– FS2002 Fairey Firefly FR.4