total system error
Also found in: Acronyms.
total system error
[¦tōd·əl ′sis·təm ‚er·ər] (navigation)
The difference between the actual flight path of an aircraft and the assigned flight path, equal to the sum of the navigation system error and the flight technical error.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.