In July 1997 , the airline 's entire fleet of Shorts 360-300s were repossessed by the leasing company due , in part , to maintenance irregularities that included the welding of hydraulic lines . Gulfstream faced a civil penalty of US$ 1.3 million . Gulfstream 's affiliate , Gulfstream Flight Academy , the successor to Avtar , came under scrutiny because Marvin Renslow , the pilot of Colgan Air Flight 3407 , trained there
Colgan Air Flight 3407
Colgan Air Flight 3407
Gulfstream International Airlines