Glossary

A/N

alpha/numeric

A/N2

alpha/numeric2

A/P

airborne device that controls aircraft's movement: 1 axis (ailerons) = roll; 2 axis (ailerons & elevator) = roll & pitch; 3 axis (ailerons, elevator & rudder) = roll, pitch & yaw

A/P

Autopilot

AA

Average Avionics

AAA

Above Average Avionics

ACT

altitude compensated tilt

ACU

antenna coupler unit

AD

amendment to regulation published by FAA requiring specific inspection, modification or maintenance on aircraft

ADF

airborne radio receiver showing bearing of radio station from aircraft

ADV

advisory

AFIS

airborne flight info sys

AFTT

Airframe total time (hours)

AHRS

attitude & heading refer. sys

AOA

angle of attack

APU

Auxiliary Power Unit

ARINC

aeronautical radio inc

ASCB

avionics std. comm. buss.

ATI

air traffic indicator

AVG I

Average Interior

AVG P

Average Paint

AVG P&I

Average Paint & Interior

ANNUAL

Yearly mandatory inspection of aircraft and engine