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What is standard‑atmosphere temperature lapse rate?

standard‑atmosphere temperature lapse rate The rate at which temperature decreases with altitude under standard atmospheric conditions, 2 °C per 1000 ft or 6.5 °C per 1000 m.

Source: ICAO Doc 9432, FAA PCG

How is “standard‑atmosphere temperature lapse rate” Used in Practice?

Pilot: According to standard‑atmosphere temperature lapse rate, temperature has dropped twelve degrees during climb.

Certification Exam Relevance

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

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

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Frequently Asked Questions

What is standard‑atmosphere temperature lapse rate?

The rate at which temperature decreases with altitude under standard atmospheric conditions, 2 °C per 1000 ft or 6.5 °C per 1000 m.

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