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(See NONPRECISION APPROACH
PROCEDURE.)
MINIMUM EN ROUTE IFR ALTITUDE− The
lowest published altitude between radio fixes which
assures acceptable navigational signal coverage and
meets obstacle clearance requirements between those
fixes. The MEA prescribed for a Federal airway or
segment thereof, area navigation low or high route, or
other direct route applies to the entire width of the
airway, segment, or route between the radio fixes
defining the airway, segment, or route.
(Refer to 14 CFR Part 91.)
(Refer to 14 CFR Part 95.)
(Refer to AIM.)
MINIMUM FRICTION LEVEL− The friction level
specified in AC 150/5320-12, Measurement,
Construction, and Maintenance of Skid Resistant
Airport Pavement Surfaces, that represents the
minimum recommended wet pavement surface friction
value for any turbojet aircraft engaged in
LAHSO. This value will vary with the particular
friction measurement equipment used.
MINIMUM FUEL− Indicates that an aircraft’s fuel
supply has reached a state where, upon reaching the
destination, it can accept little or no delay. This is not
an emergency situation but merely indicates an
emergency situation is possible should any undue
delay occur.
(Refer to AIM.)
MINIMUM HOLDING ALTITUDE− The lowest
altitude prescribed for a holding pattern which
assures navigational signal coverage, communications,
and meets obstacle clearance requirements.
MINIMUM IFR ALTITUDES− Minimum altitudes
for IFR operations as prescribed in 14 CFR Part 91.
These altitudes are published on aeronautical charts
and prescribed in 14 CFR Part 95 for airways and
routes, and in 14 CFR Part 97 for standard instrument
approach procedures. If no applicable minimum
altitude is prescribed in 14 CFR Part 95 or
14 CFR Part 97, the following minimum IFR altitude
applies:
a. In designated mountainous areas, 2,000 feet
above the highest obstacle within a horizontal
distance of 4 nautical miles from the course to be
flown; or
Pilot/Controller Glossary 2/17/05
PCG M−4
b. Other than mountainous areas, 1,000 feet above
the highest obstacle within a horizontal distance of 4
nautical miles from the course to be flown; or
c. As otherwise authorized by the Administrator
or assigned by ATC.
(See MINIMUM CROSSING ALTITUDE.)
(See MINIMUM EN ROUTE IFR ALTITUDE.)
(See MINIMUM OBSTRUCTION CLEARANCE
ALTITUDE.)
(See MINIMUM SAFE ALTITUDE.)
(See MINIMUM VECTORING ALTITUDE.)
(Refer to 14 CFR Part 91.)
MINIMUM NAVIGATION PERFORMANCE
SPECIFICATION− A set of standards which require
aircraft to have a minimum navigation performance
capability in order to operate in MNPS designated
airspace. In addition, aircraft must be certified by
their State of Registry for MNPS operation.
MINIMUM NAVIGATION PERFORMANCE
SPECIFICATION AIRSPACE− Designated airspace
in which MNPS procedures are applied between
MNPS certified and equipped aircraft. Under certain
conditions, non-MNPS aircraft can operate in
MNPSA. However, standard oceanic separation
minima is provided between the non-MNPS aircraft
and other traffic. Currently, the only designated
MNPSA is described as follows:
a. Between FL 285 and FL 420;
b. Between latitudes 27
N and the North Pole;
c. In the east, the eastern boundaries of the CTAs
Santa Maria Oceanic, Shanwick Oceanic, and Reykjavik;
d. In the west, the western boundaries of CTAs
Reykjavik and Gander Oceanic and New York
Oceanic excluding the area west of 60
W and south
of 38
30’N.
MINIMUM OBSTRUCTION CLEARANCE ALTITUDE−
The lowest published altitude in effect
between radio fixes on VOR airways, off-airway
routes, or route segments which meets obstacle
clearance requirements for the entire route segment
and which assures acceptable navigational signal
coverage only within 25 statute (22 nautical) miles of
a VOR.
(Refer to 14 CFR Part 91.)
(Refer to 14 CFR Part 95.)
MINIMUM RECEPTION ALTITUDE− The lowest
altitude at which an intersection can be determined.
(Refer to 14 CFR Part 95.)
MINIMUM SAFE ALTITUDE−
a. The minimum altitude specified in 14 CFR
Part 91 for various aircraft operations.
b. Altitudes depicted on approach charts which
provide at least 1,000 feet of obstacle clearance for
emergency use within a specified distance from the
navigation facility upon which a procedure is predicated.
These altitudes will be identified as Minimum
Sector Altitudes or Emergency Safe Altitudes and are
　
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