IN examining air route requirements from the Pilot's point of view they would seem, at first sight, to fall naturally under two main headings.
Long‐Distance Pilot, A. (1929), "What the Pilot Really Needs: Machines, Equipment and Ground Organisation Necessary on Air Routes to Ease the Pilot's Work", Aircraft Engineering and Aerospace Technology, Vol. 1 No. 10, pp. 337-338. https://doi.org/10.1108/eb029210
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