North American Aviation P-51A-1NA Mustang 43-6006, Polar Bear Published on February 3, 2013 in 3 February 1943Full resolution (1277 × 734) ← Previous Next → The fourth production airplane, North American Aviation P-51A-1-NA Mustang 43-6006. This Mustang crashed in Alsaka in 1944 an dwas recovered in 1977, then restored. It has FAA registration N51Z. (Kogo via Wikipedia)