sentences:  Two Indian-registered and two British-registered aircraft operated a Karachi-Calcutta service with was later extended to Rangoon and Singapore.On 29 May 1933, G-ABTL flew through to Melbourne, Australia (arriving on 30 June) on a route survey flight.Imperial withdrew the Atalanta from its African routes in 1937, with two being leased by Wilson Airways for operations in Kenya until July 1938.