Air Tanzania (TC, Dar es Salaam) is planning to expand to regional markets by adding a first B737-500 and several DHC-8-400s later this year. It currently operates a single DHC-8-300 5H-MWF (c/n 474) on domestic flights after its other DHC-8-300 5H-MWG (c/n 462) had to be written off following a recent landing accident at Kigoma on April 9.