Ex N2566B, USAF 48-626, but painted as 48-622. This was the military version of the Northrop N-23 Pioneer. Twenty were built but were found to be underpowered, and were soon used as ground instruction airframes. They were sold off in 1955 to civil users, and this one went to Mexico as XA-LOU before going to the museum in the early 1990s.

Painted as 48-622, but is actually ex 48-626.

The USAF ordered 10 'B' version Raiders intended for use as Artic rescue aircraft. However it was found to be underpowed and somewhat overtaken by the rapid rise in helicopter capabilities and so all were declared suplus by 1955. This example is in reality 48-626 but is painted to represent YC-125B 48-622, which was used for cold weather testing and based at Wright-Patterson Air Force Base, OH in 1950. It has been on display at the National Museum of the USAF since the early 1990s.