MEA

MEA. See minimum en route altitude.
Mean sea level. The average height of the surface of the sea at a particular location for all stages of the tide over a 19-year period.
MFD. See multi-function display.

When an MEA changes at an intersection the airways have a T bar at the end. Every airway has a changeover point. If it is not shown it is halfway.

MEA
Minimum Enroute Altitude
MEAN SEA LEVEL (MSL)
The average height of the surface of the sea for all stages of tide; used as a reference for elevations throughout the U.S.

MEA-
(See MINIMUM EN ROUTE IFR ALTITUDE.)
METEOROLOGICAL IMPACT STATEMENT- An unscheduled planning forecast describing conditions expected to begin within 4 to 12 hours which may impact the flow of air traffic in a specific center's (ARTCC) area.

Minimum En Route IFR Altitude (MEA)
The lowest published altitude between radio fixes that assures acceptable navigational signal coverage and meets obstacle clearance requirements between those fixes.

Minimum En Route Altitude (MEA)
The lowest altitude an aircraft can legally fly at under IFR on a given route. This is determined by the local terrain and navigation equipment.
Notice to Airmen (NOTAM) ...

Minimum en route altitude (MEA)
Minimum Equipment List (MEL)
Minimum obstruction clearance altitude (MOCA) ...

an innovative oxygen system, The Sharper Image Bonanza typically lofts to 17,000 feet or higher on most flights over 300 nm and is approved for flight as high as 25,000 feet. Flying at 17,000 feet allows the crew to comply with virtually any IFR MEA ...

See also: Direct, Report, Ident, Radar, Air traffic