FAA Questions/Aircraft Dispatcher/Question #29
weather theoryFAA-published sample question (ADX, Aug 2021)

Freezing Point Depressant (FPD) fluids used for deicing

A

on the ground, cause no performance degradation during takeoff.

B

provide ice protection during flight.

C

are intended to provide ice protection on the ground only.✓ Correct Answer

Explanation

FAA ground deicing guidance explains that freezing point depressant fluids are intended to remove contamination and provide limited protection (holdover time) on the ground only; they are designed to flow off during the takeoff roll and provide no in-flight ice protection. Some fluids can slightly degrade takeoff performance.

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