Minimum En-route Altitude (MEA)

Minimum En-route Altitude (MEA)


The minimum en-route altitude (MEA) is the altitude for an en-route segment that provides adequate reception of relevant navigation facilities and ATS communications, complies with the airspace structure and provides the required obstacle clearance. (ICAO Doc 8168 - PANS-OPS)


Put simply, the MEA is the lowest altitude to be flown in an airspace structure which assures:

  • reception of navigation aids necessary to navigate accurately along the required route,
  • two-way communication with air traffic control,
  • safe clearance from obstacles within the sector, and
  • conformity with any air traffic control procedures applicable within the sector.

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