Question:
Why does the Ldg Elev Man Knob has range from -2000 ft to 14000 ft when the aircraft operating range is only -1000 to 12000 ft ??
Answers:
about skyhawk A4SU and CESSNA 152?
To ensure that the system is capable of operating within it's envelope with extreme variation in local atmospheric conditions.Why can Lightening strike an aircraft if the aircraft is not earthed?
The numbers on the controller indicate the altitude you want the cabin, or interior of the aircraft, to maintain. If you set it at say 11,000ft. the pressurization system will not begin to intentionally pressurize the interior of the craft until you pass through that flight level (FL) as you progress through that level, into thinner air, the outflow valve will be driven to the closed position to stop the pressurized air from exiting. By doing this the cabin altitude should stay within 50 to 75 ft of that set level. The reverse is true of decent in that the pressurization system will not begin dropping air until the aircraft goes below an altitude setting, in this instance 11,000ft. Now the pilot and copilot can control the pressurization of the aircraft during the flight by increasing and decreasing the altitude of the cabin and as luck would have it the controls are sensitive enough to prevent hurting anybody on board.More Questions & Answers ...
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