American strike aircraft based on the C-123 Provider transport under the Black Spot research programme. The main objective was to destroy aircraft ground targets from the air at any time, thus it was fitted with a variety of special equipment (Doppler radar, infrared sensors, laser rangefinder, on-board computers). Initially the NC/AC-123K was only to be an experimental aircraft, but in wartime conditions in Vietnam two machines were converted to this standard and had full military trials from 1969 until 1971. After the programme they were converted back into standard C-123 transports. The two aircraft managed to destroy several hundred enemy ground targets of different kinds, mainly trucks and boats in the valley of the River Mekong.

• Markings for s/n 54-691, USAF, Phan Rang airbase, Vietnam 1970.
• 1:72 scale plastic model kit from Roden, requires paint and glue