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Terms for subject Aviation (1835 entries)

crossing tracks	An expression used in the application of separation indicating tracks that converge or diverge at an angle of 45° to 135° inclusive
crosswind	When referring to wind conditions, a wind not parallel to the runway or the path of an aircraft
crosswind component	The wind component measured in knots at 90° to the longitudinal axis of the runway
crosswind leg	A flight path extending from the extended centreline of the departure end of the departure runway (or departure path) to the beginning of the downwind leg
cruise climb	A cruising technique resulting in a net increase in altitude as the aircraft mass decreases. A clearance or instruction to carry out a cruise climb allows the pilot the option of climbing at any given rate, as well as the option of levelling off at any intermediate altitude.
cruising altitude	The altitude, as shown by a constant altimeter indication in relation to a fixed and defined datum, maintained during a flight or portion thereof
cryogenic	cryo
CS	Antipersonnel chemical incapacitating agent (tear gas)
CTA	control area
current engine option	CEO	Alexan­der Mat­ytsin
customs notification service	The service provided by ATS to Customs officials at certain "ports of entry" for advance notification of tra ns bo rd er fl ig hts
CVFR flight	A flight conducted under VFR within Class B airspace and in accordance with an ATC clearance
danger area	An airspace of defined dimensions above international waters within which activities dangerous to the flight of non-participating aircraft could take place at specified times
dangerous goods	Articles or substances that could pose a significant risk to health, safety, property or the environment
dash	dashboard
data link ATIS	An automatic terminal information service (ATIS) provided by data link
data link initiation capability	The function of a communication system which provides the necessary information to enable data link communications between ATS ground and aircraft systems and includes features such as log-on, update, contact and ground forward. It is the access mode for the provision of automatic dependent surveillance (ADS) and controller-pilot data link communications (CPDLC)
data link VOLMET	In-flight meteorological information provided by data link
date-time group	A combination of the date and time in a single six-figure group. When used in the text of a NOTAM, it is composed often figures, e.g. 9501191200. The first two digits indicate the year; the second two, the month; the third two, the day; and the last four, the hour and the minutes.
day	Canada (CARs) Other expression for: daylight daylight The period of time during any day that begins with the morning civil twilight and ends with the evening civil twilight