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# deviation

i. The angular difference between a magnetic and a compass heading. It is a compass error caused by the compass magnet attempting to align with the aircraft’s local magnetic field. The deviation error changes with the aircraft heading and the latitude. It is measured in degrees east (+) or west (-), depending on whether the north-seeking end of the compass needle lies to the east or west of magnetic north.
ii. The angle between the wind and the pressure gradient.
iii. In frequency modulation, the amount the carrier increases or decreases when modulated.
iv. A departure from a current clearance, such as an off-course maneuver, to avoid bad weather or turbulence.
v. A variation from set rules and regulations. Where specifically authorized in the regulation and requested by the pilot, ATC (air traffic control) may permit pilots to deviate from certain regulations.
vi. In flight, a sudden excursion from the normal flight path.
vii. The distance by which a weapon misses its target.

Aviation dictionary. 2014.

Synonyms:

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• déviation — [ devjasjɔ̃ ] n. f. • v. 1300; bas lat. deviatio I ♦ Action de dévier. 1 ♦ Action de sortir de la direction normale; son résultat. Déviation d un projectile, son écart du plan de tir. ⇒ 2. dérivation. Déviation d un navire, d un avion. ⇒ dérive.… …   Encyclopédie Universelle

• Deviation — may refer to: Deviation (statistics), the difference between the value of an observation and the mean of the population in mathematics and statistics Standard deviation, which is based on the square of the difference Absolute deviation, where the …   Wikipedia

• Deviation [1] — Deviation. Ein Punkt beschreibe eine Kurve (s. die Figur) und flehe zur Zeit t in M; υ sei eine Geschwindigkeit zu dieser Zeit. Nach Ablauf einer weiteren Zeit ϑ sei M seine Lage. Ein zweiter Punkt gehe zur Zeit t gleichzeitig mit… …   Lexikon der gesamten Technik

• Deviation — Déviation Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Déviation est un terme pouvant signifier : déviation de l arme adverse en sports de combat déviation vers l est, phénomène physique… …   Wikipédia en Français

• deviation — deviation, aberration, divergence, deflection denote departure or an instance of departure from a straight course or procedure or from a norm or standard. Deviation, the term of widest application, usually requires qualification or a context to… …   New Dictionary of Synonyms

• deviation — I noun aberrance, aberrancy, aberration, abnormality, alteration, anomalousness, anomaly, antipathy, antithesis, branching off, breach of practice, change of direction, change of position, contrast, dedinatio, defiance of custom, departure,… …   Law dictionary

• deviation — de vi*a tion, n. [LL. deviatio: cf. F. d[ e]viation.] 1. The act of deviating; a wandering from the way; variation from the common way, from an established rule, etc.; departure, as from the right course or the path of duty. [1913 Webster] 2. The …   The Collaborative International Dictionary of English

• Deviation — (lat.: deviare: „(vom Weg) abweichen“ zu via: „Weg“) steht für: Deviation (Navigation), Fehler des Magnetkompasses durch Störfelder am Fahrzeug Deviation (Seerecht), die Abweichung vom vertraglich festgelegten Reiseverlauf Deviation… …   Deutsch Wikipedia

• déviation — DÉVIATION. s. f. Détour, action par laquelle un corps se détourne de son chemin. J ai descendu la rivière sans aucune déviation. Il se dit figurément dans le même sens. Il a suivi sans déviation, dans toute sa conduite, les principes qu il s est… …   Dictionnaire de l'Académie Française 1798

• deviation — [dē΄vē ā′shən] n. [ME deviacion < LL deviatio] the act or an instance of deviating; specif., a) sharp divergence from normal behavior b) divergence from the official ideology or policies of a political party, esp. a Communist party c) the… …   English World dictionary

• deviation — deviation. См. девиация. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.