Glossary

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

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MSL

Definition
Mean Sea Level
Glossary Measurement

MSSR

Definition
Monopulse Secondary Surveillance Radar
Glossary Navigation Source: AIS

MT

Definition
Mountain
Glossary Meteorology Source: CASR Part 145

MTBF

Definition
Mean Time Between Failure
Glossary Airworthiness Source: AIS

MTBR

Definition
Mean Time Between Removals
Glossary Airworthiness Source: AIS

MTP

Definition
Maximum Tyre Pressure
Glossary Airworthiness Source: CASR Part 147

MTSAT

Definition
Multi-function Transport Satellite
Glossary Systems Source: AIP

MTTF

Definition
Mean Time To Failure
Glossary Airworthiness Source: AIS

MTTR

Definition
Mean Time To Repair
Glossary Airworthiness

MWO

Definition
Meteorological Watch Office
Glossary Meteorology Source: AIS

MX

Definition
Mixed type of ice formation (white and clear)
Glossary Meteorology Source: AIS

N

Definition
North, North Latitude
Glossary Measurement Source: AIS

N1 or NG

Definition
Gas Generator Speed
Glossary Flight operations Source: AIS

N2

Definition
Second Stage Turbine Speed
Glossary Flight operations Source: AIS

NAA

Definition
National Aviation Authority (for a country other than Australia)
Glossary Organisation
Online version available at: https://www.casa.gov.au//resources-and-education/glossary
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