De Havilland Canada DHC-6 300 Twin Otter, C-FAKB
During a ferry flight from Calgary, Canada to the Maldives, an electrical fire started in the power distribution and generator control box located in the roof of the passenger cabin. The crew isolated the electrical systems and successfully diverted to London Gatwick Airport. The source of the fire was traced to the left generator reverse current relay, which was found to have a different part number to the relays authorised for use on the DHC-6 series of aircraft. Five Safety Recommendations were made.