Instrument Meteorological Conditions
From EUROCONTROL ATM Lexicon
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| Term | Instrument Meteorological Conditions |
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Abbreviation
IMC
Definition
Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling, less than the minima specified for visual meteorological conditions.
Definition Source
ICAO (2007) Official definition modified by Amdt 16 to An 6/II (09/11/1995)
Note
Note 1.— [An 11] The specified minima for visual meteorological conditions are contained in Annex 2.
Note 2.— [PANS-ATM] In a control zone, a VFR flight may proceed under instrument meteorological conditions if and as authorized by air traffic control.
