Charles Ulm

Ulm was born on 18 October 1898 in Middle Park, Victoria. He was the third son of Ada Emma (née Greenland) and Emile Gustave Ulm. His father was a French-born artist and his mother was an Australian. Ulm spent his early years in Melbourne, moving to Sydney as a child where his family settled in Mosman. He was educated at state schools.

After the failure of Australian National Airways, Ulm bought one of the airline's Avro X aircraft for himself, and named it Faith in Australia. In this aircraft in 1933, Ulm set the speed record from England to Australia at 6 days, 17 hours and 56 minutes, and made several trans-Tasman flights.

In 1934, flying in Faith in Australia, Ulm carried the first official airmail from New Zealand to Australia, and the first official airmail delivery from Australia to Papua New Guinea.

Disappearance

Ulm established a new company in September 1934, Great Pacific Airways Ltd, intending to operate a San Francisco-Sydney air service. Ulm disappeared in December 1934, together with copilot George Littlejohn and navigator Leon Skilling, on a test flight from Oakland, California to Hawaii in VH-UXY Stella Australis, an Airspeed Envoy. It is believed an unexpected tailwind and bad weather caused them to fly past the Hawaiian Islands in the dark. The wind was about 35 knots (65 km/h; 40 mph) from the south-southeast and the aircraft may also have been pushed north of the islands. At about 10 am local time on 3 December, after sending a series of Morse coded radio messages to Hawaii over five hours advising that they were lost and running out of fuel, the Envoy ditched into the sea. Despite an extensive and immediate search by aircraft and 23 naval ships, no trace of Stella Australis or her crew was ever found. Ulm had chosen not to carry a life raft on board, preferring to save weight and predicting that the aircraft would float for two days if it were forced to land on the water.

The plane had been customized by Airspeed to meet Ulm's own specifications; Airspeed's manager, Nevil Shute Norway, suggested in his autobiography that the internal cabin design may have contributed to the navigational problems, because the inexperienced navigator/wireless operator (who had been a ship's officer) had to sit in the rear compartment behind the large petrol tank and some distance from the pilot. Ulm communicated by speaking tube but could not see the charts or calculations (this arrangement had been chosen by Ulm instead of having the navigator in the cramped space in front of the tank with the pilot and co-pilot).