George Bayliss Lothian George Bayliss Lothian George Bayliss Lothian was born November 20, 1909 in Vancouver, British Columbia, Canada. He was one of the first pilots of Trans-Canada Air Lines in 1937, which later became Air Canada. He died February 13, 2000. George Lothian was the first Canadian pilot to log 100 aircraft crossings of the North Atlantic and set the trans-Atlantic crossing speed record three times. When he retired from Air Canada in 1968 he had logged over 21,000 as pilot in command of many different piston and jet transport aircraft. He reluctantly gave flight instruction in the Vickers Viscount turboprop airliner
Vickers hardness test the material. The fin attachment pins and sleeves in the Convair 580 airliner were specified by the aircraft manufacturer to be hardened to a Vickers Hardness specification of 390HV5, the '5' meaning five kiloponds. However, on the aircraft flying Partnair Flight 394 the pins were later found to have been replaced with sub-standard parts, leading to rapid wear and finally loss of the aircraft. On examination, accident investigators found that the sub-standard pins had a hardness value of only some 200-230HV5. Vickers hardness test The Vickers hardness test was developed in 1921 by Robert L. Smith and George E. Sandland