Air Atlantis operated charter flights to/from Funchal for workers in the horticulture & tourism industries. Flights usually had to stop off en-route to pick up extra fuel on the way back to FNC as aircraft take off weight was limited off Guernsey's runway. Pics from my collection.

CS-TET Boeing 737-200 Guernsey 1989
CS-TIH Boring 737-300 Guernsey 1992
