HDG flag

Words for: Navigation & XC Planning

Dead Reckoning
VFR terminal area chart
TAC
World Aeronautical Chart
World Aeronautical
Aeronautical Navigation Products
Latitude and Longitude (Meridians and Parallels)
equator
Measurement of Direction
reciprocal
magnetic variation
Deviation
Variation
magnetic heading
magnetic deviation
Effect of Wind
Basic Calculations
Converting Minutes to Equivalent Hours
Time T = D/GS
Distance D = GS X T
GS GS = D/T
Converting Knots to Miles Per Hour
fuel consumption
E6B
plotter
protractor
Wind Triangle or Vector Analysis
vector analysis
Weather Check
AFM/POH — Airplane Flight Manual or Pilot's Operating Handbook
NOTAMs — Notices to Airmen
aeronautical advisory station frequency
Charting the Course
course deviation indicator
Isogonic line
very high frequency omnidirectional range
NAVAIDs — navigation aids
omnidirectional range
ground-based navigation
VOT — VOR test facility
omniranges
OBS — omnibearing selector
course selector
azimuth dial
VOR/VORTAC NAVAIDS
dual VOR receiver check
omninavigation instrument
CDI needle
VOR/LOC — VOR/Localizer
NAV warning flag
HDG flag
directional gyro
pointer function switches
tracking
slant-range distance
course intercept
rate of intercept
angle of intercept
slant range distance
distance measuring equipment
area navigation receivers
VOR/DME RNAV
airways
nondirectional radio beacon
approach mode
VOR Parallel mode
annunciators
Compass Locator
Automatic Direction Finder
fixed azimuth dial
position fixes
Homing
Global Positioning System
RNAV guidance
selective availability
pseudorange
baro-aiding
barometric altimeter
sidereal day
RAIM — Receiver Autonomous Integrity Monitoring
RAIM capability
VFR waypoints
VFR waypoint names
lost procedure
flight diversion
Radio magnetic indicator (RMI)

86 words in this area · Next word: directional gyro →

Plain English Meaning

A small flag on the HSI that pops into view to tell the pilot the heading shown by the instrument cannot be trusted right now.

Full Definition

A warning flag on a Horizontal Situation Indicator (HSI) that appears when the heading information being displayed is unreliable or has failed. When visible, the HSI's heading display should not be trusted for navigation or course tracking.

Context Anchor

Seen on an HSI or other cockpit heading display when the heading source or signal has failed or is not usable.

Derivation

HDG is the standard cockpit shorthand for heading. A 'flag' in instrument terminology is a small visible indicator that drops into view to warn the pilot of a problem — the same idea as a red flag being raised to signal a fault.

Plain English Meaning

Full Definition

Context Anchor

Derivation

Why Pilots Care

Analogy

Intuition Check

Example Sentence 1

Example Sentence 2