 Following the introduction of new services to Medellin and Charlotte, the airline added a fifth MD-80 on May 12, 2011.Apart from the new flights to Charlotte and Medellin, Insel Air is now flying to Manaus in Brazil and Barranquilla in Colombia.The company also completed the IATA operational safety audit (IOSA) and joined ALTA, the Latin American and Caribbean Air Transport Association, in November 2011.