Glossary

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

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HAPI

Definition
Helicopter approach path indicator
Glossary Instrumentation Source: ICAO

HAPs

Definition
High-altitude pseudo-satellites
Description
High-altitude pseudo-satellites
Glossary

HAT

Definition
Height Above Threshold
Glossary Measurement Source: AIS

HBN

Definition
Hazard Beacon
Glossary Safety Source: AIS

HDF

Definition
High frequency direction-finding station
Glossary Communication Source: ICAO

HDG

Definition
Heading
Glossary Navigation Source: AIS

HDS

Definition
Hours of Daylight Saving (NOTAM)
Glossary Communication Source: AIS

HEL

Definition
Helicopter
Glossary Aircraft Source: AIS

HF

Definition
Human Factors
Glossary Safety

HF

Definition
High Frequency (3000 to 30,000 KHZ)
Glossary Communication Source: AIS
Online version available at: https://www.casa.gov.au//resources-and-education/glossary
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