What condition triggers the UH-60 anti-icing/de-icing system to operate, and how is it activated?

What condition triggers the UH-60 anti-icing/de-icing system to operate, and how is it activated?

• A. System is designed to prevent ice buildup on critical surfaces like rotor blades and engine inlets and is activated automatically or manually under icing conditions.
• B. Icing conditions detected but system placed in manual mode only.
• C. Icing conditions present but system not activated.
• D. System cools surfaces to prevent ice indirectly.

Answer: (C)

The anti-icing/de-icing system on the UH-60 is commanded by the crew; icing alone does not automatically turn it on. Even when icing conditions are present, the system remains off until the pilot actively selects it (using the anti-ice switch and the appropriate mode, such as AUTO or ON, depending on the helicopter version). This design helps conserve bleed-air and gives the crew control over when to apply heat. The ice detectors may warn of icing, but they don’t energize the system by themselves. So, icing conditions exist but the system isn’t energized unless deliberately commanded, which is why the described scenario emphasizes manual activation rather than automatic engagement.

The anti-icing/de-icing system on the UH-60 is commanded by the crew; icing alone does not automatically turn it on. Even when icing conditions are present, the system remains off until the pilot actively selects it (using the anti-ice switch and the appropriate mode, such as AUTO or ON, depending on the helicopter version). This design helps conserve bleed-air and gives the crew control over when to apply heat. The ice detectors may warn of icing, but they don’t energize the system by themselves. So, icing conditions exist but the system isn’t energized unless deliberately commanded, which is why the described scenario emphasizes manual activation rather than automatic engagement.