Lockheed 8 Sirius “Tingmissartoq”
Image by cliff1066™
Their next venture in the Sirius came as a result of the five countries’ interest in the development of commercial air transport. In 1933 Pan American Airways, Imperial Airways of Great Britain, Lufthansa of Germany, KLM of Holland, and Air France undertook a cooperative study of possible Atlantic routes. Each was assigned the responsibility for one of the following areas: New Newfoundland to Europe via Greenland; Newfoundland via the great circle route to Ireland; Newfoundland southeast to the Azores and Lisbon; Miami, Bermuda, the Azores, and Lisbon; and across the South Atlantic from Natal, Brazil, to Cape Verde, Africa.
Pan American was to survey the Newfoundland to Europe via Greenland route. Ground survey and weather crews in Greenland were already hard at work when Lindbergh, Pan Am’s technical advisor, took off from New York on July 9 in the rebuilt Lockheed Sirius, again accompanied by his wife, who would serve as copilot and radio operator. A Sperry artificial horizon and a directional gyro had been added to the instrument panel since the previous flight, and a new Wright Cyclone SR1820-F2 engine of 710 horsepower was installed. Lindbergh’s plan was not to set up a particular route but to gather as much information as possible on the area to be covered.
The Jellinge, a Danish ship, was chartered by Pan Am to maintain radio contact with the Lindberghs in the Labrador-Greenland-Iceland area. The ship also delivered advance supplies for them to Halifax, Saint John’s, Cartwright, Greenland, and Iceland.
