Measuring drift and determining wind speed and direction while in flight

Federal Aviation Regulations, Part 63, Navigator Flight Test , see flight test items 15, 16, 17, and 42.




Navigation and Nautical Astronomy, Dutton (1934)


Page 375

Aircraft Navigation Manual, H.O. 216 (1941), U.S. Navy Department, Hydrogaphic Office

According to the U.S. Navy navigation manual, Aircraft Navigation Manual, H. O. 216 (1941 ed.) the accuracy of the the wind determined by use of a drift meter is +/- 20° in direction and +/- 3 knots in speed.


Pages 32 to 37


Aircraft Navigation Manual, H.O. 216 (1967), U.S. Navy Department, Hydrogaphic Office

Page 148

Air Navigation (1945)


Drift meters




Drift computation





Air Navigation, AFM 51-40 (1951)

Pages 90 to 99




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