As part of Oliver North 's activities to trade arms for hostages with Iran and to support the contra rebellion in Nicaragua , Southern Air carried four loads of US weapons bound for Iran from the US to Israel , and on the return flights carried weapons destined for the Nicaraguan Contras from Portugal . The shooting down of an SAT flight in Nicaragua in October 1986 helped expose the Iran-Contra affair . Additionally , SAT aircraft were spotted being loaded with cocaine in Colombia in the same time period
shooting down of an SAT flight
Corporate Air Services HPF821
Southern Air Transport