Minimum IFR Altitude

Words for: Departures, En Route & Arrivals

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charted airport sketches
departure procedure
DPs — departure procedures
non-towered airport
OpSpecs — Operations Specifications
noise abatement procedures
obstacle departure procedure
Noise Abatement
Clearway
Stopway
mountainous areas
non-mountainous areas
40:1 OCS
Mean sea level
EOPs — engine out procedures
low, close-in obstacles
OEI net takeoff flight path
OEI — one-engine-inoperative
OEI takeoff flight path
gross OEI flight path
Airport Obstacle Analysis
OEI takeoff distance
KAPA
airport/runway analysis
maximum allowable takeoff weight
standard instrument departure
ODP Flight Planning Considerations
textual ODP
random (diverse) IFR flight
graphic ODP
PDR — Preferential Departure Route
SID
Transition Route
cautionary statements
charted SID procedure
dead reckoning navigation
Non-RNAV DP
RNAV DP
ATS Route
NAR — National Airspace Redesign
conventional avionics
RAIM — approach receiver autonomous integrity monitoring
GBAS landing system
LPV — APV with SBAS
ILS
MLS
FANS 1/A
VDL
SATCOM
GBAS — Ground-Based Augmentation System
VHF RTF
SBAS
UHF RTF
ACARS
LORAN C
HF RTF
inertial navigation
CPDLC
MNPS — minimum navigation performance specifications
ICAO flight plan equipment codes
FAA flight plan aircraft suffixes
LPV (APV with SBAS)
FMC WPR ACARS
D-FIS ACARS
PDC ACARS
Intertial Navigation
CPDLC ATN VDL Mode 2
CPDLC FANS 1/A HFDL
CPDLC FANS 1/A VDL Mode 4
CPDLC FANS 1/A VDL Mode 2
CPDLC FANS 1/A SATCOM (MTSAT)
ATC RTF (MTSAT)
PBN approved
RVSM approved
MNPS approved
VHF with 8.33 kHz channel spacing capability
extended squitter
UAT — Universal Access Transceiver
ADS-C
VDL Mode 4
transponder with Mode C
ADS-B
SSR Modes A and C
SSR Modes S
RTCA/EUROCAE Interoperability Requirements Standard For ATN Baseline 1
DO-280B/ED-110B
NAV/
PBN/
STS/NONRVSM
constant radius to a fix leg
IRU — Inertial Reference Unit
RNP 1
RF — constant radius to a fix
ICAO flight plan
DME/DME
DME/DME/IRU
RNAV 1
RNAV 2
route centerline
DME/DME navigation system updating
Fly-by Waypoint
Fly-OVER Waypoint
radar departure
diverse vector areas
VCOA — Visual Climb OVER Airport
VMC
ARINC
GCO — Ground Communication Outlet
VFR departure
ground-based navigational aid
fixes
Airway
RVSM — Reduced Vertical Separation Minima
en route navigation
strata
safe separation standards
ATC specialist
sector
computerized radar systems
CFRs
Handoff
Aeronautical Information Services
Center frequency boxes
FL 350
preferred IFR route
VORTAC — very high frequency omnidirectional ranges/tactical air navigation
location identifiers
High Altitude Area Navigation Routing
VORTAC — very high frequency omnidirectional range/tactical air navigation
preferred IFR routing
VOR/VORTAC shutdown
approach control airspace
SUA — special use airspace
ATCAA — Air Traffic Control Assigned Airspace
NOTAMs
coded route identifier
RNAV route system
official location identifier
altitude strata
LF/MF airways
outbound radial
limits of controlled airspace
controlled airspace centerline containment
VHF radio aids to navigation
RNAV routes
GNSS MEA
Joint Victor/RNAV route
Tower En Route Control
Aeronautical Chart
VHF Airways
RNAV Q-Route MEAs
Airway/Route Depiction
Joint Jet/RNAV route
VOR radials
Changeover Point
IFR En Route Low Altitude Chart
route designators
VOR station
Composition of Designators
ICAO spelling alphabet
IFR approved GNSS
low altitude RNAV only route
dogleg segment
G suffix
IFR En Route High Altitude Chart
RNAV Route MEA
DME/DME/IRU RNAV
Victor airway navigation procedures
off-route obstruction clearance altitude
en route obstacle clearance area
RNAV capability certification suffix
AMOTT intersection
total VOR system accuracy factor
navigational course guidance gap
Direct Route Flights
off-airway non-Part 95 routes
FMS control display unit
Published RNAV Routes
basic route designator
regional networks of ATS routes
remote status indicator
Kopter
supersonic
RNP 1 route
tangential arc
NAV/E2 code
PBN/C1-C4
R suffix
random RNAV route
RNP Operations
Off-Airway Routes
magnetic unreliability
ground-based NAVAID signal coverage
Navigational Gaps
MEA step
Waypoint
VOT — VOR test facility signal
course selector
VOR checkpoint sign
omnibearing select
Dual VOR Check
Airborne VOR Check
NDB Accuracy Check
User-defined waypoints
floating waypoints
metering fixes
overlay approaches
FAFs — sensor final approach fixes
NAVAID accuracy check
multilateration
RNP level
RNP AR
RNAV accuracy check
RMI
VOR accuracy
system initialization
unpublished airspace fix
airspace fix
ATC metering fix
STAR origination point
SID terminating point
Computer Navigation Performance
overlay approach
onboard navigation monitoring and alerting
Standard RNP Levels
minimum en route altitude
Minimum IFR Altitude
TERPS — United States Standard for Terminal Instrument Procedures
IFR Cruising Altitude or Flight Level
VFR conditions on-top
Hg
minimum turning altitude
ADCs — air data computers
VFR conditions on top
cruise clearance
radio fixes
hPa — hectopascals
QFE — Altitude Above Ground
RNAV MEA
QNE — Barometric Pressure for Standard Altimeter Setting
QNH — Barometric Pressure for Local Altimeter Setting
minimum crossing altitude
MVA chart
altimeter setting correction factor
pressure altimeter
airport altimeter datum
IFR En Route Altitudes
RNAV Minimum En Route Altitude
Maximum Authorized Altitude
Minimum Obstruction Clearance Altitude
flyover protection
minimum vectoring altitude
IFR cruising altitude
lowest usable flight level
RVSM — reduced vertical separation minimums
31.00 " Hg
hectopascals
Additional Reports
noncompulsory reporting points
GPS/GNSS receivers
communication failure
squawking code 7600
RDOF
Afterburner
clearance readback/hearback error
fuel state awareness
diversion procedures
squawk code 7600
IFR no-radio operations
ARTCC radio frequency outage
interphone lines
altitude alerter
readback/hearback error
En Route Reporting Procedures
Non-Radar Position Reports
Position Report Items
relay via FSS radio
expedite climb
arrival
descent planning
navigational performance
VOR — omnidirectional radio range
VOR — VHF omnidirectional radio range
descent groundspeed
transoceanic operations
approach constraints
monotonic decelerations
VNAV path
ECON speed
headwind adjustment
Mach
tailwind adjustment
turbojets
turboprop
baro-VNAV — barometric VNAV
LNAV/VNAV — lateral navigation/vertical navigation
LNAV/VNAV minimums
RNAV Approach
Mach .80/280
SA
ATC-coded IFR route
Interpreting the STAR
deceleration profiles
LNAV mode
RNAV STARs
standard terminal arrival route
deceleration segments
AUBRN Intersection
Ephrata VOR
RADDY Intersection
WAC — World Aeronautical Charts
Yakima VOR
Ephrata Transition
VORTACs — VHF Omnidirectional Range/Tactical Aircraft Control
VORTAC — VHF Omnidirectional Range/Tactical Aircraft Control
Airspeed
ATC radar
PAWLING TWO ARRIVAL
1013.2 hectopascals
1013.2 hectopascals or millibars
29.92 inches of mercury
FL 180
JANESVILLE FOUR ARRIVAL
standard altimeter setting
TRANS LEVEL: BY ATC
VNAV planning information
RNAV (GPS) Y RWY 15R
RNAV (RNP) Z RWY 15R
glideslope/glidepath intercept
Metering FIX
reciprocating engine
200 KIAS
250 KIAS
controlled flight into terrain
AGL
Class B airspace area
Class D Airspace
Class E Airspace
Domestic Airspace
KIAS
offshore Class E airspace
established inbound
HEATT Intersection
present position direct
ZISUR
LOM
glideslope/glidepath intercept altitude
maintain until established on the localizer
nonstandard instrument approach
Special Airport Qualification

350 words in this area · Next word: TERPS — United States Standard for Terminal Instrument Procedures →

Plain English Meaning

The lowest height a pilot is allowed to fly when flying on instruments, set by rules to keep the aircraft safely above the ground and obstacles and within range of the navigation and radio signals it needs.

Full Definition

The lowest altitude at which an aircraft may legally operate under Instrument Flight Rules (IFR) over a given route or area. It is set by regulation to ensure adequate terrain and obstacle clearance, acceptable navigation signal reception, and safe communication coverage. Specific minimums include the Minimum En Route Altitude (), (), (MVA), Minimum Reception Altitude (MRA), and the minimums published on .

Plain English Meaning

Full Definition

Context Anchor

Derivation

Why Pilots Care

Grounding Statement

Intuition Check

Example Sentence 1

Example Sentence 2