clear

i. In air traffic control, it means permitted to take off or land, cleared to carry out other maneuvers, or cleared to proceed under specified conditions. The activity the pilot is cleared to perform is either suffixed to the word clear, as in “clear to take off,” or it is in response to the request by the pilot as when “Permission to take off?” is answered by an air traffic controller’s “Clear.”
ii. To rectify stoppage in an automatic weapon. Also to ensure its serviceability as in “clearing guns” (by firing a small burst into the air).
iii. Authorized to carry out any task as in “Clear to alter height” or “Clear to fly radial.”
iv. The area around the aircraft is clear for aircraft starting.
v. In reference to the sky, it is devoid of any clouds as in “clear sky.” The aircraft may also be in between layers but in VMC (visual meteorological conditions). Also means, “A portion of the sky is free or relatively free of clouds.”
vi. To check nearby airspace for safe airwork or maneuvering of aircraft.
vii. To clear an engine. To open the throttle of an idling reciprocating engine in flight to free it from carbon and/or an overrich mixture.
viii. To clear the air, meaning to gain a favorable air situation in a given sector.
ix. To authorize hardware as fit for use.
x. To fly over an obstacle without touching it (i.e., clear of obstacles).

Aviation dictionary. 2014.

Synonyms:

Look at other dictionaries:

  • clear — [klir] adj. [ME cler < OFr < L clarus, orig., clear sounding, hence clear, bright: for IE base see CLAMOR] 1. free from clouds or mist; bright; light [a clear day] 2. free from cloudiness, muddiness, etc.; transparent or pure; not turbid [a …   English World dictionary

  • Clear — (kl[=e]r), a. [Compar. {Clearer} ( [ e]r); superl. {Clearest}.] [OE. cler, cleer, OF. cler, F. clair, fr.L. clarus, clear, bright, loud, distinct, renowned; perh. akin to L. clamare to call, E. claim. Cf. {Chanticleer}, {Clairvoyant}, {Claret},… …   The Collaborative International Dictionary of English

  • Clear — may refer to: Contents 1 Music 2 Business 3 Technology 4 …   Wikipedia

  • clear — adj 1: unencumbered by outstanding claims or interests a search showed the title was clear 2: free from doubt or ambiguity Merriam Webster’s Dictionary of Law. Merriam Webster. 1996 …   Law dictionary

  • clear — adj 1 Clear, transparent, translucent, lucid, pellucid, diaphanous, limpid are comparable when they mean having the property of being literally or figuratively seen through. Something is clear which is free from all such impediments to the vision …   New Dictionary of Synonyms

  • Clear — Clear, v. t. [imp. & p. p. {Cleared}; p. pr. & vb. n. {Clearing}.] 1. To render bright, transparent, or undimmed; to free from clouds. [1913 Webster] He sweeps the skies and clears the cloudy north. Dryden. [1913 Webster] 2. To free from… …   The Collaborative International Dictionary of English

  • clear — ► ADJECTIVE 1) easy to perceive or understand. 2) leaving or feeling no doubt. 3) transparent; unclouded. 4) free of obstructions or unwanted objects. 5) (of a period of time) free of commitments. 6) free from disease, contamination, or guilt. 7) …   English terms dictionary

  • clear — [adj1] cloudless, bright clarion, crystal, fair, fine, halcyon, light, luminous, pleasant, rainless, shining, shiny, sunny, sunshiny, unclouded, undarkened, undimmed; concepts 525,617,627 Ant. cloudy, dark, dim, dull, fuzzy, gloomy, shadowy,… …   New thesaurus

  • clear — clear; clear·age; clear·ance; clear·ly; clear·ness; clear·starch; un·clear; clear·cole; clear·er; clear·head·ed·ly; un·clear·ly; un·clear·ness; …   English syllables

  • clear — clear, clearly The grammatical situation is similar to that in the preceding entry, with clear available as an adverb in two principal meanings, (1) ‘completely’ (They got clear away), (2) ‘in a clear manner, with clear effect’ (They spoke out… …   Modern English usage

  • clear up — {v.} 1. To make plain or clear; explain; solve. * /The teacher cleared up the harder parts of the story./ * /Maybe we can clear up your problem./ 2. To become clear. * /The weather cleared up after the storm./ 3. To cure. * /The pills cleared up… …   Dictionary of American idioms

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.