instrument clearance
11Minimum obstacle clearance altitude — Minimum Obstacle Clearance Altitude, or MOCA, is the lowest published altitude in effect between fixes on VOR airways, off airway routes, or route segments that meets obstacle (like a building or a tower) clearance requirements for the entire… …
12approach clearance — Authorization issued by air traffic control to the pilot of an aircraft for landing under instrument flight rules. The type of instrument approach procedure (IAP), along with other pertinent information, is provided in the approach clearance when …
13Obstacle Clearance Altitude — Unter Obstacle Clearance Altitude (OCA) versteht man in der Luftfahrt die Höhe über MSL, in der bei einem Instrumentenanflug noch Freiheit von Hindernissen besteht. Sie ist vor allem für den Flug unter Instrumentenflugbedingungen von Bedeutung.… …
14IFR clearance VFR-on-top — An IFR (instrument flight rules) flight plan operating in VFR (visual flight rules) weather conditions may request VFR on top in lieu of an assigned altitude. This clearance permits the pilot to select an altitude or flight level of his or her… …
15request full-route clearance — A term used by pilots to request that the entire route of a flight be read verbatim in an ATC (air traffic control) clearance. Such requests should be made to preclude receiving an ATC clearance based on the original filed flight plan when a… …
16short-range clearance — A clearance issued to a departing IFR (instrument flight rules) flight that authorizes an IFR flight to a specific fix short of the destination while ATC (air traffic control) facilities are coordinating and obtaining the complete clearance …
17Nut (string instrument) — For other uses, see Nut (disambiguation). The nut of a string instrument is a small piece of hard material which supports the strings at the end closest to the headstock or scroll. The nut marks one end of the speaking length of each open string …
18standard instrument departure — A designated IFR departure route linking the aerodrome or a specified runway of the aerodrome with a specified significant point, normally on a designated ATS route, at which the en route phase of flight commences (ICAO). A standard IFR… …
19appropriate obstacle/terrain clearance altitude — A specified minimum published altitude that must be flown by an aircraft to ensure safe flight over an obstruction or specified terrain. These include minimum IFR (instrument flight rules) altitude (MIA), minimum en route altitude (MEA), minimum… …
20approach clearance — Authorization for a pilot conducting flight in accordance with instrument flight rules to commence an approach to an airport …
