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.

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).
References in periodicals archive ?
12:46:51 ATC Malaysian Three Seven Zero Lumpur radar Good Morning climb flight level two five zero
The Condor Airlines pilot noticed on his systems, another aircraft coming from the opposite direction, on the same flight level.
The last words spoken in the cockpit were by 52-year-old Wagner: "This is Pan Am Clipper 103, flying at flight level 310 headed for Kennedy Airport.
Where the minimum published altitude is above 18,000 feet msl, the lowest usable flight level must be the "equivalent of the minimum altitude plus the number of feet specified" in the second table above.
As I acknowledged and started to switch frequencies, I heard one of the incoming airliners check in: "Well, that's a hard act to follow, but this is Cactus 123 descending out of flight level 230.
Eurocontrol had explained that while Ukrainian authorities had closed the route from ground to flight level 320, the doomed Malaysia Airlines flight MH17 was flying at Flight Level 330 (approximately 10,000 metres/33,000 feet) when it disappeared from the radar.
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.
The flight climbed through the weather and leveled at Flight Level 270.
and runup sequences, we broiled in the aircraft and stopped sweating only at Flight Level 290.
Indian aviation officials revealed that the Saudi jet had been cleared to climb to a flight level of 14,000 feet.
The solution allows for network, regional, hub, market and flight level views, representing a rolling 12-month historical, and nine month forward looking view on the information.
TOPS, which stands for Total OPerations System, integrates data from multiple sources and produces a holistic view of the airlines 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.