Civil Aviation Order 20.91 (Instructions and directions for performance-based navigation) 2012
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3 Definitions
3.1In this Order:
AA means Airservices Australia.
AC means Advisory Circular.
AFM means Aircraft Flight Manual.
approved means approved by CASA.
Note See subregulation 2 (1) of CAR 1988. Unless otherwise indicated, CASA approvals are issued in writing.
APU means Auxiliary Power Unit.
APV means Approach with Vertical Guidance.
AR means authorisation required.
ARINC 424 Path Terminator means Aeronautical Radio Incorporated Specification 424 format for coding airborne navigation databases.
ARP means Aerodrome Reference Point.
ATC means Air Traffic Control.
Baro-VNAV means Barometric Vertical Navigation.
CAAP means Civil Aviation Advisory Publication.
CAO means Civil Aviation Order.
CAR 1988 means Civil Aviation Regulations 1988.
CBT means computer-based training.
CDI means Course Deviation Indicator.
cross-track error/deviation means the perpendicular distance between the planned flight path of an aircraft and the computed aircraft position as displayed by the aircraft’s navigation instruments.
DA means Decision Altitude.
DME means Distance Measuring Equipment.
EASA means European Aviation Safety Agency.
(E)HSI means Electronic Horizontal Situation Indicator.
EOSID means Engine-Out Standard Instrument Departure.
ETSO means a European Technical Standard Order.
FAA means Federal Aviation Administration.
FAF means Final Approach Fix.