Active between 1988 and 1994, Portuguese charter airline Air Columbus had two Boeing 727-2J4 in use, both leased from Sterling Airways. Pictured in July 1992, CS-TKB (s/n 20764 / 960) made its first flight in 1973 and was delivered to Danish carrier Sterling Airways on 26 July 1973. Air Columbus named it after João Gonçalves Zarco, a Portuguese explorer. When Sterling Airways ceased operations in 1993, both Air Columbus B727 were withdrawn from use and stored at Copenhagen. Between 1997 and 2001 it was operated as N290SC by Sun Country Airlines before it went into storage and scrapped in 2004 at Marana.