Aviation English
Flight Planning

What is density altitude?

density altitude Altitude at which the aircraft feels it is flying based on current pressure, temperature, and humidity, affecting performance.

Source: ICAO Doc 9432, FAA PCG

How is “density altitude” Used in Practice?

Pilot: We calculated density altitude at 5500 feet, which significantly affects engine and climb performance.

Certification Exam Relevance

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

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

runway‑length correction for slope and temperaturestandard‑atmosphere temperature lapse rateoutside air temperatureFuel temperature

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Frequently Asked Questions

What is density altitude?

Altitude at which the aircraft feels it is flying based on current pressure, temperature, and humidity, affecting performance.

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