FAA AMT Airframe Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 1030

What factor controls the operation of the cabin pressure regulator?

Engine pressure

Cabin temperature

Cabin altitude

The factor that controls the operation of the cabin pressure regulator is the cabin altitude. This is because the cabin pressure regulator is responsible for maintaining a safe and comfortable air pressure inside the cabin, which is directly influenced by the altitude of the aircraft. Option A, engine pressure, may seem like a possible factor but the engine pressure does not directly affect the cabin pressure. Option B, cabin temperature, is incorrect as the cabin temperature can be controlled separately from the cabin pressure. Option D, outside air pressure, may seem like another possible factor, but this is also not directly responsible for controlling the cabin pressure as it can vary at different altitudes. Therefore, option C is the correct answer as it directly relates to the function of the cabin pressure regulator.

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Outside air pressure

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