CHAPTER 7
APPENDICES
EFD1000/500 MAX MFD Pilot’s Guide
Page 7-9
091-00006-002 ()
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 Identification 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 Traffic 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
Configuration 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.