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Rev 5 Jan/2003
KMD 550/850 Pilot's Guide
Tailwind: difference between ground speed and true airspeed when
ground speed is more than true airspeed.
Track: angle of the aircraft’s path over the ground measured clockwise
relative to north.
ACRONYMS AND ABBREVIATIONS
AC: Alternating Current
ACT: Active (user waypoint or flight plan)
ADF: Automatic Direction Finder
AGL: Above Ground Level
AMR: Americas data area
ANSI: American National Standards Institute
APR: Approach
APT: Airport
ARTCC: Air Route Traffic Control Center
ASCII: American Standard Code for Information
Interchange
ASOS: Automated Surface Observation System
ATC: Air Traffic Control
ATF: Aerodrome Traffic Frequency
ATI: Atlantic International data area
ATIS: Automatic Terminal Information Service
A/C: Aircraft
baud: or Baud Rate; a measurement of data transmission
speed
BRG: Bearing
CAA: Civil Aviation Authority
CAS: Calibrated Airspeed
com: communication
CDI: Course Deviation Indicator
CTA: Control Area
CTAF: Common Traffic Advisory Frequency
CTR: Control Zone
Definitions, Acronyms & Abbreviations
KMD 550-850 PG R8 3/6/07 11:22 AM Page 30