height above touch-down
height above touch-down
[′hīt ə‚bəv ′təch‚dau̇n] (navigation)
In air operations, the height of the minimum descent altitude above the highest elevation in the touch-down zone. Abbreviated HAT.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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