A hangar was built at Bergen Airport in 2003, and at the same time the airline was certified as a mechanical aviation workshop. The following year, the Cessna 421 was replaced with a Cessna 441 Conquest II. In 2006, two Beechcraft King Air were bought, and the last Cessna sold. On 20 November 2003, Notodden Airport was closed for all scheduled traffic by the Norwegian Civil Aviation Authority, due to a lack of safety requirements. Bergen Air Transport was forced to reroute all its aircraft to Skien Airport, Geiteryggen. Following an investment of NOK 500,000 from the airline and NOK 1.2 million from the municipality, which owns the airport, scheduled services commenced again. From 1 October 2004, NOK 250,000 was invested at Notodden Airport. Starting in October 2004, the airline also introduced security control of all passengers at Notodden Airport. In 2005, the company had a revenue of NOK 10.3 million; this increased to NOK 20.1 million in 2006, giving a profit of NOK 2.8 million, when the airline transported 2,841 passengers.