CHAPTER 7 APPENDICES
EFD1000/500 MFD Pilot’s Guide
Page 7-13
091-00006-001 REV B
7.6. Glossary
Accuracy Estimated position accuracy in feet or meters.
A/D Analog to Digital
AC Alternating Current
ACU Analog Converter Unit
ADC Air Data Computer
ADI Attitude Director Indicator
ADIZ Air Defense Identication Zone
AFMS Airplane Flight Manual Supplement
AGL Above Ground Level
AHRS Attitude Heading Reference System
AI Attitude Indicator
AIM Aeronautical Information Manual
AIRMET Airman’s Meteorological Information
Altitude Elevation above sea level.
APPR Approach
APT airport
ARC Partial heading arc format (100°)
ARINC Aeronautical Radio Inc.
ATC Air Trac Control
ATIS Automatic Terminal Information Service
AWOS Automated Weather Observing System
Back Course Localizer back course approach where the
signal on the back side of the localizer is used
for alignment to the runway opposite of normal
localizer alignment. Without compensation the
CDI would reverse sense.
Battery Time The time remaining on the battery before it is
fully discharged.
BC Back Course
Bearing The compass direction from the current
position to the destination.
BP Bearing Pointer
Calibrated Airspeed Indicated airspeed corrected for installation and
instrument errors.
CDI Course Deviation Indicator
CFR Code of Federal Regulations
CM Conguration Module
COM communication radio
Course The route taken from the starting position to
destination.
Course to Steer The recommended direction to steer in order
to reduce cross-track error and return to the
course line.
Cross Track The perpendicular distance, left or right, away
from the selected course.
Crosstrack Error The distance the aircraft is o the desired
course