Minimum Safe/Sector Altitude

Words for: Instrument Approaches

CFR — Code of Federal Regulations
SIAPs — standard instrument approach procedures
OpSpecs
SOPs
approach planning
NM
Notices to Airmen
SIAPs
Part 91, subpart K
windspeed
Chippewa Valley Regional Airport
KEAU
PIREPs/UUA — urgent pilot weather reports
TAFs — terminal aerodrome forecast
FIS-B — Flight Information Service—Broadcast
Automated Weather Observing System (AWOS)
HIWAS — Hazardous In-flight Weather Advisory Service
AIRMETs — Airman's Meteorological Information
SIGMETs — Significant Meteorological Information
convective SIGMETs
PIREPs
UUA
winds/temperatures aloft forecasts
aeronautical weather information
broadcast weather
CS
ATIS — Automated Terminal Information Service
ceilometer
cloud advection
CWA — Center weather advisories
nowcast
PIC — pilot in command
VREF — reference landing speed
IFR Landing Minimums
aircraft performance operating limitations
Subpart I
one engine inoperative
Aircraft Approach Category
IAS — indicated airspeeds
CAR — Circling Approach Radius
company callouts
Air Route Traffic Control Center (ARTCC)
Altitude
instrument approach chart
straight-in procedure
Volpe National Transportation Systems Center
SAAAR — Special Aircraft and Aircrew Authorization Required
RNP AR — Authorization Required
circling-only procedure
approach control
radar handoffs
remote altimeter setting source
QNH — altimeter sub-scale setting
Durango VOR
AFSS
RCOs — remote communications outlets
GCOs — ground communications outlets
primary NAVAID
primary final approach NAVAID
traditional courses
VORTAC — VOR/TACAN
locator outer marker
locator middle marker
glidepath angle
Minimum Safe/Sector Altitude
Final Approach Fix Altitude
Minimums section
false glideslope
vertical navigation
approach lighting system
ALSF-1 — Approach Light System with Sequenced Flashing Lights
MALSF — Medium Intensity Approach Lighting System with Sequenced Flashers
SSALF — Simplified Short Approach Light System with Sequenced Flashers
sequenced flashing lights
millimeter wave radiometry
millimeter wave radar
EFVS operation to touchdown and rollout
EFVS operation to 100 feet above the TDZE
red terminating bars
runway end identifier lights
OpSpec C073
MSpec MC073
LOA C073
advisory VNAV
GBAS — Ground Based Augmentation System
GLS — GBAS Landing System
inoperative component
WAAS channel number
WAAS approach identifier
GLS approach
VDB — VHF data broadcast
Wide Area Augmentation System
MAHWP — missed approach holding waypoint
Required Navigation Performance
Baro-VNAV
constant radius turns
onboard performance monitoring and alerting
RNAV approach authorization
LTP
remote altimeter setting
DME/DME RNP 0.3 Authorized
AIM 7-2-3
timing from FAF
snowflake symbol
steeper than standard climb gradient
balked landing
flight management system
TOGA — Take-off/Go-Around
KORD
IAP briefing
airspeed bugs
altimeter bug
radio altimeter bug
G/S — glideslope
autopilot modes
LVL CHG — level change
FD
VNAV profile
FL CHG — flight level change
speed selector
maximum acceptable descent rates
stabilized approach
grey shaded line
example approach briefing
Approach Clearance
instrument approach procedure segments
Feeder Route
terminal route
DME arc
course reversal
PT — Procedure Turn
200 knots indicated airspeed
maneuvering side
Initial Approach Segment
Intermediate Approach Segment
Final Approach Segment
maneuvering zone
holding pattern-in-lieu-of procedure turn
HILO — hold-in-lieu-of PT
dual-purpose IF/IAF
NPA — nonprecision approach
glideslope/glidepath
Terminal Arrival Area (TAA)
contact approaches
types of approaches
nonradar environment
decommissioning
VOR network
FAA Order 8260.3 TERPS
CVFP — charted visual flight procedure
MVA/MIA
RNAV approaches
circuitous route
TAA design
stand-alone RNAV (GPS) approach
RNAV (GPS) approach
RNAV approach types
GPS stand-alone/RNAV (GPS) approach
LNAV minimums
hazardous terrain
RNAV (GPS) approach using WAAS
LPV minimums
SBAS — satellite-based augmentation system
LP
SBAS — Satellite Based Augmentation System
approaches
ILS approaches
CAT I ILS approach
converging ILS approaches
ILS approach
ILS approach categories
Autoland
CAT IIIa
CAT IIIb
CAT IIIc
TDZ RVR
midfield RVR
OpSpecs Part C
ILS CAT I
CAT II
CAT III
ILS CAT I precision approach
1,800 RVR
simultaneous dependent approaches
simultaneous independent approaches
staggered separation
SOIA — Simultaneous Offset Instrument Approaches
AAUP — Attention All Users Page
dual VHF communications
SOIA procedure
LDA/PRM approach with glideslope
PRM frequency
LDA/PRM approach
ILS/PRM approach
Intersecting Runways
RVR 2,400 feet
RVR 1,800 feet
RVR 1,200 feet
RVR 700 feet
RVR 150 feet
15° and 100°
Localizer-type directional aid (LDA)
Simplified directional facility (SDF)
VOR approach
on-airport VOR
on-airport VOR facility
off-airport VOR facility
VOR/DME approach
NDB approach
on-airport NDB facility
NDB/DME approach
Radar Approaches
No Gyro Approach
off-airport VOR
on-airport NDB
Precision Approach Radar
glideslope angle
Airport Surveillance Radar
CENRAP — Center Radar ARTS Processing
localizer approaches
localizer/DME approach
ASR Approach
localizer approach
localizer back course approach
LDA approach
localizer back course
false glideslope signal
LDA/Glideslope
S-LDA/GS
S-LDA
SDF approach
Fort Rucker
KOZR
KAEX
Carthage/Panola County Sharpe Field
K4F2
KRYN
KAVL — Asheville Regional
LOC RWY 36
KTVR — Vicksburg Tallulah Regional
LOC BC RWY 25R
KHFD — Hartford Brainard
LDA RWY 2
SDF RWY 36
Lebanon Floyd W Jones

245 words in this area · Next word: Final Approach Fix Altitude →

Plain English Meaning

An altitude shown on the approach chart that guarantees you'll clear all terrain and obstacles within a circle around the airport or navaid. It's there as a safety net if you get lost, disoriented, or have an emergency near the airport — fly at or above this altitude and you know you won't hit anything.

Full Definition

Minimum Safe/Sector Altitude (MSA) is an emergency-use altitude depicted on instrument approach charts that provides at least 1,000 feet of obstacle clearance within a defined radius (typically 25 nautical miles) of a specified navigation fix, usually the airport reference point or a primary navaid with the approach. MSAs are published in feet above and may be divided into when terrain or obstacles vary significantly around the .

Plain English Meaning

Full Definition

Context Anchor

Derivation

Why Pilots Care

Analogy

Intuition Check

Example Sentence 1

Example Sentence 2