On the apron at Valiant Air Command Warbird Museum. C-123s were the first tactical transports deployed in Jan 1962 to Vietnam. Flying defoliation missions under Ranch Hand, resupply under Mule Train and covert ops with SOS units and Air America, the C-123 was used for over a decade. Converted from the 'B' model, the 'K' featured 12.68 kN J85-GE-17 auxiliary jet pods. This aircraft wore camo when it went to Honduras in 1986 where it was registered as HR-ALK with Trans Costa Rica and wore the name "No Problemas." It was impounded at Ft Lauderdale in 1989 and eventually went to the museum.

Stored at Davis-Monthan AFB with park code CP054 in 1981. Sold as HR-ALK in 1986 and operated by the CIA for the Nicaraguan Contras while based at Tegucigalpa, Honduras. Stored and Fort Lauderdale by 1990 and reregistered as N674JK. To the Air America Foundation in 1992 and stored at Titusville, FL. Reregistered as N38LF in 2006 but not taken up. Still at Titusville in 2002.

This a/c was later converted to a C-123K. Retired to MASDC on 3 June 1981. Registered as HR-ALK and operated by the CIA in Honduras. Later owned by various owners as N674JK and N38LF, which expired in February 2013.