Preflight Check Practice Test

Which indicator shows proper Halon extinguisher pressure during preflight?

Pressure gauge needle in the green band Pin is missing Bracket is loose Handle is warm to the touch

Correct Answer:

Pressure gauge needle in the green band

Explanation:

The key idea is that pressure is read directly from the extinguisher’s pressure gauge. When the needle sits in the green band, it means the cylinder is within its proper, charged pressure range and ready for use. The green zone is calibrated to reflect safe operating pressure for the Halon extinguisher. The other signs don’t indicate pressure. A missing safety pin signals tamper protection failure, not how full or pressurized the cylinder is. A loose mounting bracket risks the extinguisher becoming unsecured. A handle that feels warm could indicate heat exposure or other issues, but it doesn’t tell you about the cylinder’s current pressure.

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