Type IV de-icing/anti-icing fluid is used to ______ and is ______ in color?

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Prepare for the Endeavor Air Indoctrination Training Test. Study with flashcards and multiple-choice questions, each offering hints and explanations. Get ready for your exam!

Multiple Choice

Type IV de-icing/anti-icing fluid is used to ______ and is ______ in color?

Explanation:
The key idea is that Type IV fluid is intended for anti-icing, not de-icing. It’s a high-viscosity fluid applied after the ice has been removed to prevent new ice from forming on critical surfaces during the holdover time and taxi to takeoff. Because it stays on surfaces longer, it provides ongoing protection. The orange color serves as a visual cue to identify this anti-icing fluid and differentiate it from other fluids used in the process. So, Type IV is used to anti-ice and is orange in color.

The key idea is that Type IV fluid is intended for anti-icing, not de-icing. It’s a high-viscosity fluid applied after the ice has been removed to prevent new ice from forming on critical surfaces during the holdover time and taxi to takeoff. Because it stays on surfaces longer, it provides ongoing protection. The orange color serves as a visual cue to identify this anti-icing fluid and differentiate it from other fluids used in the process. So, Type IV is used to anti-ice and is orange in color.

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