Meteorology

Altimeter Setting to Mean Sea Level Pressure

The altimeter setting that corresponds to the atmospheric pressure at mean sea level. Referred to as QNH in ICAO phraseology.

Quick answer: The altimeter setting that corresponds to the atmospheric pressure at mean sea level. Referred to as QNH in ICAO phraseology.

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Quick answer

The altimeter setting that corresponds to the atmospheric pressure at mean sea level. Referred to as QNH in ICAO phraseology.

Why it matters

Altimeter Setting to Mean Sea Level Pressure matters because it supports clear communication in Meteorology contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Editorial context

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Questions and answers

Questions and answers

What is Altimeter Setting to Mean Sea Level Pressure?

In this glossary, Altimeter Setting to Mean Sea Level Pressure refers to: The altimeter setting that corresponds to the atmospheric pressure at mean sea level. Referred to as QNH in ICAO phraseology.

How is Altimeter Setting to Mean Sea Level Pressure used in aviation?

In aviation communication, this term appears in contexts such as: "Tower, confirm QNH 1013 set for altimeter setting to sea level pressure."

Why does Altimeter Setting to Mean Sea Level Pressure matter in aviation?

Altimeter Setting to Mean Sea Level Pressure matters because it supports clear communication in Meteorology contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.

Who uses Altimeter Setting to Mean Sea Level Pressure?

Altimeter Setting to Mean Sea Level Pressure is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.

What category does Altimeter Setting to Mean Sea Level Pressure belong to?

In this glossary, Altimeter Setting to Mean Sea Level Pressure is grouped under Meteorology. Related pages in this category explain adjacent procedures, commands and operational concepts.

Where does this definition come from?

This definition is sourced from ICAO Doc 9432, FAA PCG and published by Protermify Aviation as a static aviation reference page.

Definition

The altimeter setting that corresponds to the atmospheric pressure at mean sea level. Referred to as QNH in ICAO phraseology.

Operational example

Tower, confirm QNH one zero one three set for altimeter setting to sea level pressure.

Definition language

English reference definition

Source

ICAO Doc 9432, FAA PCG

Category

Meteorology

Exam relevance

  • ICAO Level 4
  • ICAO Level 5
  • ICAO Level 6
  • EASA FCL.055

Target audience

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related terms

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