Instrument Flying: Technique in Weather Page: 16
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T. O. No. 30-100D-1Downdrafts on the lee side of hills are most severe near the surface.
Maintain adequate altitude, even though the wind may be stronger.eral rainfall that will indicate the worst turbulence,
but the small, violent areas of shower or squall.
Never dive an airplane to avoid turbulence. Such
a maneuver may result in stress far in excess of the
design limit of the aircraft. Moreover, if a down-
draft is encountered, you may recover from the dive
only with difficulty and a great loss of altitude.
Without question, the pilot's primary effort whenin turbulent air should be to maintain approximately
constant air speed at all times, and to avoid any ma-
neuver which might produce a stall or spin. This can
be done by holding a constant heading, guarding against
overcontrol, and maintaining an indicated air speed
about 50 percent above stalling speed. The experienced
pilot will avoid regions of moderate and severe turbu-
lence whenever possible. He does not subject himself
or his' airplane to needless strains, nor his mission
to unnecessary hazards.-N
a
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Section 3
16
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Army Air Forces. Instrument Flying: Technique in Weather, book, January 1, 1944; Ashland, Ohio. (https://texashistory.unt.edu/ark:/67531/metapth873973/m1/22/?q=+date%3A1941-1945: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting National WASP WWII Museum.