PERHAPS the three most important factors in any form of transport are speed, reliability and safety, of which the first is the most important, particularly in air transport.
McIsaac, A. (1929), "A Course for Ground Engineers: II.—Hints on the Inspection of Aircraft before Flight from the Point of View of the “A” Licence Holder", Aircraft Engineering and Aerospace Technology, Vol. 1 No. 2, pp. 64-67. https://doi.org/10.1108/eb029110
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