DE-ICE refers to which procedure?

• A. Removing ice from the wings using warm air, inflatable boots, or chemical means.
• B. The movement of an aircraft from a higher to a lower altitude.
• C. A flight that normally does not require transfer to another aircraft.
• D. Licensed operators who schedule and monitor all aircraft and crew.

Answer: (A)

De-icing is the process of removing ice from aircraft surfaces to restore smooth airflow and safe performance. In practice, you might see heated air applied to the surfaces, inflatable de-icing boots on the wings that inflate to crack and peel ice, or chemical de-icers that melt and wash away ice. This is distinct from anti-icing, which aims to prevent ice from forming. The other statements describe descent, nonstop routing, or scheduling/monitoring roles—none of which involve removing ice from the aircraft.