General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Practice Exam

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What happens to the exterior anti-ice heating of forward windows?

  1. It activates independently

  2. Requires manual intervention

  3. Functions with interior anti-fogging heating

  4. Deactivates when airborne

The correct answer is: Functions with interior anti-fogging heating

The correct answer reflects the operation of the exterior anti-ice heating system for forward windows, indicating that it functions in conjunction with interior anti-fogging heating. This integrated system ensures effective de-icing and defogging, which is crucial during flight, particularly in conditions where moisture might freeze on the windows. When the exterior anti-ice system activates alongside the interior heating, it prevents ice build-up on the outside while also eliminating condensation on the inside, allowing for clearer visibility for the pilots. This dual-functionality is essential for maintaining safety in flight operations. Other options may imply a standalone or separate operation of the systems, which is not typically how these systems are designed to function in aircraft.