Which is a method for performing positive-pressure ventilation of an aircraft fire?

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Multiple Choice

Which is a method for performing positive-pressure ventilation of an aircraft fire?

Explanation:
Positive-pressure ventilation works by introducing air into a space to raise interior pressure above the outside, which forces smoke and hot gases to move toward an exhaust path. In an aircraft, hot smoke naturally wants to rise, so creating an opening at the highest point provides an efficient outlet for that buoyant plume. This upper opening lets the smoke escape as fresh air is pushed in, improving visibility and reducing exposure inside the cabin or fuselage. Opening doors or windows on the windward side or simply pulling smoke out with fans does not reliably create the pressure differential needed for effective PPV and can allow smoke to spread or backflow into the interior.

Positive-pressure ventilation works by introducing air into a space to raise interior pressure above the outside, which forces smoke and hot gases to move toward an exhaust path. In an aircraft, hot smoke naturally wants to rise, so creating an opening at the highest point provides an efficient outlet for that buoyant plume. This upper opening lets the smoke escape as fresh air is pushed in, improving visibility and reducing exposure inside the cabin or fuselage. Opening doors or windows on the windward side or simply pulling smoke out with fans does not reliably create the pressure differential needed for effective PPV and can allow smoke to spread or backflow into the interior.

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