A "Flight of the Phoenix" thread discussed the original Tallmantz Phoenix. A few details about this airplane: It was designed by Otto Timm, built by Tallmantz, and did use a compilation of Beech 18 (outer wing panels) and T-6 (center section, engine mount, wheels, engine, other small parts). It incorporated a wooden aft fuselage and tail section. It was not the airplane used on the set of the film but was only built for the flying scenes. It was trucked to Yuma, Arizona, in July 1965 and test flown there by Mantz. It flew very poorly and plans for a desert takeoff from the film set located about thirty miles northwest of Yuma were scrapped. It was planned to make low approaches and then film the liftoff for inclusion in the film. Mantz flew it probably a half dozen times, including scenes filmed on July 6. The director was not happy because of camera postioning and Mantz planned to fly it again on the morning of July 8. The film crew got two good takes and a third one was attempted. Mantz touched down on the low approach, then bounced hard, after which the aft fuselage broke and the airplane cartwheeled. The stuntman riding behind Mantz was thrown clear but Mantz was crushed by the airplane.
After the crash, Tallmantz was pretty much out of the picture. The takeoff footage was usable, but the airborne footage had not been shot, so the Air Museum's O-47 (from Ontario, CA) was cosmetically modified to fly as the Phoenix and someone from that museum flew it for the film.
Mantz's widow ended up filing a lawsuit against Tallmantz, even though Mantz was a principal owner of the company. The suit settlement precipitated the huge Tallmantz collection selloff that occurred by auction in 1968.
Check out this link for photos and more:
http://stripe.colorado.edu/%7Esteinerd/Phoenix.html.