(b)
within which IFR or VFR aircraft may operate; and

(c)
that may be established in controlled or uncontrolled airspace, or both.

. abbreviation: MTR
Fr: route d’entra.nement militaire
minimum crossing altitude U.S.: The lowest altitude at certain fixes at which an aircraft must cross when proceeding in the direction of a higher minimum en route IFR altitude (MEA).
. abbreviation: MCA
minimum descent altitude The altitude above sea level (ASL) specified in the Canada Air Pilot (CAP) or the route and approach inventory for a non-precision approach, below which descent shall not be made until  the required visual reference to continue the approach to land has been established.
. abbreviation: MDA
Fr: altitude minimale de descente
minimum en route altitude The altitude above sea level (ASL) between specified fixes on airways or air routes that assures acceptable navigational signal coverage and that meets the IFR obstacle clearance requirements. Note: This altitude is published on aeronautical charts.
. abbreviation: MEA
Fr: altitude minimale en route
minimum en route IFR altitude U.S.: Expression for: minimum en route altitude (MEA)
minimum equipment list A document approved by the Minister pursuant to CAR 605.07(3) that authorizes an operator to operate an aircraft with aircraft equipment that is inoperative under the conditions specified therein and that may specify certain equipment that must be operative.
.
abbreviation: MEL

.
see also: master minimum equipment list (MMEL)

Fr: liste d’équipement minimal
minimum fuel An expression used to inform ATC that an aircraft’s fuel supply has reached a state that is sufficient to reach destination, provided that unexpected delays are not encountered. Fr: carburant minimum
minimum holding altitude The lowest altitude prescribed for a holding pattern that assures navigational signal coverage, communications, and meets obstacle clearance requirements.
. abbreviation: MHA
Fr: altitude minimale d’attente
minimum IFR altitude The lowest IFR altitude established for use in a specific airspace. Depending on the airspace concerned, the minimum IFR altitude may be a minimum obstacle clearance altitude (MOCA), a minimum en route altitude (MEA), a minimum sector altitude (MSA), a minimum vectoring altitude (MVA), a safe altitude 100 NM, an area minimum altitude (AMA), a transition altitude or a missed approach altitude. The minimum IFR altitude provides obstacle clearance but may or may not be within controlled airspace. Fr: altitude IFR minimale
minimum navigation performance specifications An expression used to designate specifications relating to the navigation performance capability of aircraft operating in specified portions of the airspace.