The Short C-23 Sherpa is a small military transport aircraft built by Short Brothers. It was designed to operate from unpaved runways and make short takeoff and landings (STOL). It features a large squared fuselage with a full-width rear cargo door/ramp. The C-23A and C-23B are variants of the Short 330 and the C-23B+ is a variant of the Short 360. 60 aircraft were used it was finally retired from US service in 2014, but remains in international service. Although it was widely used for other uses it was originally the winner of an early 1980s competition for a light cargo aircraft to deliver cargo, especially aviation parts, for EDSA. While the C-23 was a new production, as was the C-23B, the C-23B+ were actually Shorts 360, with the tail and rear fuselage of a C-23. One of the differences between the C-23 and C-23B, is that the latter had cabin windows. The aircraft has a substantial amount of civilian use and also was operated by the U.S. Forestry Service and NASA for example. The NASA C-23 is still in service and used for research. The aircraft continues in service with the Philippines and Djibouti, as well as various civilian and governmental agencies, such as the aforementioned NASA research Sherpa.
Short C-23 Sherpa
The Short Skyvan, from the C-23 was developed, and C-23B+ was a combination of C-23 and Shorts 360
C-23A with aft cargo door down
A C-23 Sherpa in center front with a C-5 Galaxy in rear
The Short 330 is a small turboprop transport aircraft produced by Short Brothers. It seats up to 30 people and was relatively inexpensive and had low maintenance costs at the time of its introduction in 1976. The 330 was based on the SC.7 Skyvan. The C-23 Sherpa was a military version of the 330. Production of the aircraft ended in 1992, after 141 were produced. The Short 360 was a development of the Short 330.
Short 330
Mississippi Valley Airlines's Short 330 at Saint Paul International Airport in 1985
The US Army C-23 is a variant of the 330 model