flight level


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flight level

[′flīt ‚lev·əl]
(aerospace engineering)
A surface of constant atmospheric pressure which is related to the standard pressure datum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

flight level (FL)

A surface of constant atmospheric pressure that is related to a specific pressure datum, 1013.2 hectopascals (29.92 in. of mercury), and is separated from other such surfaces by specific pressure intervals. Each flight level is stated in three digits that represent hundreds of feet. For example, flight level 270 represents a pressure altitude of 27,000 ft with the altimeter set at 1013.2 hectopascals (29.92 in. of mercury). Consecutive flight levels are separated by a pressure interval corresponding to at least 500 ft (150 m) in the standard atmosphere. This does not preclude reporting intermediate levels in increments of 100 ft (30 m). See level (i).
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
While your initial departure and the climb is where you will report leaving an altitude the most, what about when you're at cruise or even up in the flight levels?
By all accounts, it does not appear that the crew of the A380 did anything wrong, but rather, the ATC crew should have double-checked flight levels and they did not."
Flight Level Media develops in-flight applications and custom content solutions for both airlines and systems manufactures.
The Condor Airlines pilot noticed on his systems, another aircraft coming from the opposite direction, on the same flight level.
Apart from the usual summer buildups, the weather was beautiful at flight level 240.
The plane had been in level cruising at flight level 310 (31,000 feet) for about seven minutes when co-pilot Wagner made contact with Shanwick Oceanic Area Control in Ireland, which assigns flight corridors to planes heading across the Atlantic.
Among these are improvements in the management of flights in oceanic airspace, that allow more aircraft to achieve their optimum route and flight level, helping to cut flying times, fuel burn and emissions; and the use of polar routes, which provide more efficient routing for flights traveling between North America and parts of Asia.
TOPS, which stands for Total OPerations System, integrates data from multiple sources and produces a holistic view of the airline's operation, from the global scale to the individual flight level, in order to anticipate and notify operations staff of any potential issue and provide solution options.
Pilot: Hello, hello, EgyptAir 804, flight level 370, squawk number 7624
12:26:21 MAS 370 MAS 370 we are ready requesting flight level three five zero to Beijing
IAF radars picked up the aircraft, flying at a flight level of 37,000 feet, as it entered Indian airspace on an established border entry point on the ATS route.