Type IV anti-icing fluid characteristics include which of the following?

Type IV anti-icing fluid characteristics include which of the following?

• A. Green in color and longer holdover time than Type II.
• B. Orange in color with short holdover time.
• C. Clear/white and used only on small aircraft.
• D. Red in color with no holdover advantage.

Answer: (A)

Type IV anti-icing fluid is designed to stay effective longer than Type II fluid, giving a longer holdover time under icing conditions. It achieves this through its thicker, more viscous formulation with properties that help it spread and remain on the aircraft surface longer as temperatures and moisture change. The green color is the identifying marker used to distinguish Type IV from other fluids, which is why this option correctly describes both its appearance and its extended holdover capability. The other statements don’t fit because they describe characteristics of other fluids or inaccuracies: the orange color with short holdover describes Type I, not Type IV; a clear/white fluid used only on small aircraft isn’t how Type IV is categorized or applied; and red with no holdover advantage does not reflect the actual benefit of Type IV, which is its extended holdover time.

Type IV anti-icing fluid is designed to stay effective longer than Type II fluid, giving a longer holdover time under icing conditions. It achieves this through its thicker, more viscous formulation with properties that help it spread and remain on the aircraft surface longer as temperatures and moisture change. The green color is the identifying marker used to distinguish Type IV from other fluids, which is why this option correctly describes both its appearance and its extended holdover capability.

The other statements don’t fit because they describe characteristics of other fluids or inaccuracies: the orange color with short holdover describes Type I, not Type IV; a clear/white fluid used only on small aircraft isn’t how Type IV is categorized or applied; and red with no holdover advantage does not reflect the actual benefit of Type IV, which is its extended holdover time.