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Above Ground Level (AGL) A measurement of elevation, or "height", above a specific land mass (also see MSL). International Civil Aviation Organization The ICAO is the specialized agency of the United Nations with a mandate "to ensure the safe, efficient and orderly evolution of international civil aviation."
MSL mean sea level: MSLW Max. Structural Landing Weight MSP Modes S-Specific Protocol MSSS Mode S-Specific Services MSTOW Max. Structural Take-off Weight MSZFW Max. Structural Zero Fuel Weight MTBF Mean time between failures: MTBSV Mean time between shop visit MTBUR Mean time between unscheduled removals MTOW maximum take-off weight: MTTF
In aviation, a control area (CTA) is "a controlled airspace extending upwards from a specified limit above the earth", not less than 200m (700 feet), although the limit does not need to be established uniformly within a control area. [1]
Class A airspace is generally the airspace from 18,000 feet (~3.4 miles, 5.5 km) mean sea level (MSL) up to and including flight level (FL) 600 (~11.4 miles, 18.3 km), including the airspace overlying the waters within 12 nautical miles (NM) (~13.8 miles, 22.2 km) of the coast of the 48 contiguous states and Alaska. Unless otherwise authorized ...
Airspace class Time Altitude Surface to 1200 feet AGL [b] 1200 feet AGL to 10,000 feet MSL 1200 feet AGL and above 10,000 feet MSL; Visibility [c] Clearance from clouds [d] Visibility [c] Clearance from clouds [d] Visibility [c] Clearance from clouds [d] G Day 1 [e] clear of clouds [f] 1: 500 below, 1000 above, 2000 horizontally 5: 1000 below ...
In the U.S., the airspace of a TCA is typically designated as class B. In the U.K., the airspace of a TMA is usually designated as class A, D or E. In Australia and New Zealand, "terminal airspace" is not used both in common vernacular or publication and legislation. However, the traditional structure of terminal airspace is present in Class C ...
In the United States and Canada, Victor airways are low-altitude airways. They are defined in straight-line segments, each of which is based on a straight line between either two VHF omnidirectional range (VOR) stations, or a VOR and a VOR intersection, [ 1 ] hence the beginning letter V (pronounced as Victor in the ICAO phonetic alphabet ).
Civil IFR flights in class G airspace. [6] Canada: Uncontrolled IFR at or above 18,000 ft MSL. [7] ICAO countries: Code squawked when entering a secondary surveillance radar (SSR) area from a non-SSR area used as uncontrolled IFR flight squawk code. [1] EASA countries