Glossary

Look up acronyms, technical terms and phrases to find out what they mean.

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NZS

Definition
New Zealand Standard
Glossary Regulations

O/R

Definition
On Request
Glossary Communication

OAR

Definition
Office of Airspace Regulation
Glossary Organisation

OAT

Definition
Outside Air Temperature
Glossary Meteorology Source: CASA

OBPR

Definition
Office of Best Practice Regulation
Glossary Organisation

OBS

Definition
Omni Bearing Selector
Glossary Navigation

OBS

Definition
Observe, Observed, Observation
Glossary Meteorology

OBSC

Definition
Obscure, Obscured, Obscuring
Glossary Safety

OBST

Definition
Obstacle
Glossary Safety

OBSTR

Definition
Obstruction
Glossary Safety
Online version available at: https://www.casa.gov.au//resources-and-education/glossary
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