Aviation English
Fueling Deicing

What is Holdover time?

Holdover time The estimated time anti-icing or de-icing fluid will prevent formation of frost, ice, or snow on the aircraft's critical surfaces under current weather conditions.

Source: ICAO Doc 9432, FAA PCG

How is “Holdover time” Used in Practice?

Ground, confirm the holdover time for de-icing fluid is still valid before departure.

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 Holdover time?

The estimated time anti-icing or de-icing fluid will prevent formation of frost, ice, or snow on the aircraft's critical surfaces under current weather conditions.

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