effective air path

effective air path

[ə¦fek·tiv ′er ‚path]
(navigation)
A straight line on a navigation chart connecting two air positions, commonly used between the air positions of two pressure soundings in order to determine effective true airspeed between the two soundings.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.