Convair 440/C-131 Samaritan

The Convair 240 / 340 / 440 family of airliners was produced between 1947 and the mid 1950s as a successful attempt at a DC-3 replacement. It was the first twin engine, pressurized airliner. After a false start, the configuration of two R-2800 engines and 40 seats was settled on – hence the “240” as the model number. An interesting feature of the 240 series was the “air-stair” at the tail, similar to that which became normal on the DC-9 and Boeing 727. First flight was in March 1947. The success of this design can be seen by the numbers of updated airframes still flying commercially around the World

The CV-240/340/440 series was used by the United States Air Force (USAF) for medical evacuation and VIP transport and was designated as C-131 Samaritan. The first model Samaritan, the C-131A, was derived from the CV-240 model, and was delivered to the USAF in 1954.