letdown


letdown
The procedure adopted commencing from the top of the descent at the end of cruising through the approach for landing. It does not include the terminal part of the final approach. The various types of letdown are the NDB (nondirection beacon) let-down, radar letdown, en route descent, pipeline descent, QGH, etc. The procedure for letdown is given in the instrument approach charts. The illustration indicates a high-altitude letdown procedure by combat aircraft using a radio compass or a direction finder. See also instrument approach chart.
Typical high altitude controlled descent (QGH/NDB) let down pattern for a combat aircraft

Aviation dictionary. 2014.

Look at other dictionaries:

  • letdown — index damper (depressant) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • letdown — let .dau̇n n a physiological response of a lactating mammal to suckling and allied stimuli whereby increased intramammary pressure forces previously secreted milk from the acini and finer tubules into the main collecting ducts from where it can… …   Medical dictionary

  • letdown — (n.) also let down, disappointment, 1768, from LET (Cf. let) (v.) + DOWN (Cf. down) (adv.). The verbal phrase is from mid 12c. in a literal sense; figuratively by 1795 …   Etymology dictionary

  • letdown — [n] disappointment anticlimax, balk, bitter pill*, blow, chagrin, comedown, disgruntlement, disillusionment, frustration, setback, washout*; concepts 410,728 Ant. advantage, benefit, blessing, boon, satisfaction …   New thesaurus

  • letdown — [let′doun΄] n. 1. a slowing up or feeling of dejection, as after great excitement, effort, etc. 2. the gliding descent of an airplane as it prepares to land 3. a disappointment or disillusionment …   English World dictionary

  • letdown — /let down /, n. 1. a decrease in volume, force, energy, etc.: a letdown in sales; a general letdown of social barriers. 2. disillusionment, discouragement, or disappointment: The job was a letdown. 3. depression; deflation: He felt a terrible… …   Universalium

  • letdown — let•down [[t]ˈlɛtˌdaʊn[/t]] n. 1) a disillusionment or disappointment: The news was a letdown[/ex] 2) depression; deflation: I felt a terrible letdown after the party[/ex] 3) a decrease in volume, force, energy, etc 4) aer. the descent of an… …   From formal English to slang

  • letdown — {n.} A disappointment; a heartbreak. * /It was a major letdown for John when Mary refused to marry him./ …   Dictionary of American idioms

  • letdown — {n.} A disappointment; a heartbreak. * /It was a major letdown for John when Mary refused to marry him./ …   Dictionary of American idioms

  • letdown — noun Date: 1768 1. a. discouragement, disappointment < his latest novel is a letdown > b. a slackening of effort ; relaxation 2. the descent of an aircraft or spacecraft to the point at which a landing approach is begun 3. a physiological… …   New Collegiate Dictionary


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.