Also known as: sec.
SEC has various meanings in the Aviation category. Discover the full forms, definitions, and usage contexts of SEC in Aviation.
(1) General term for an extruded or fabricated structural member. (2) Transverse vertical plane through the hull perpendicular to the Centerline.
AviationApplied to a circle, cold front, depression, meridian, or port, to distinguish it from a primary Often used to denote a secondary depression
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