What is the difference between absolute ceiling and service ceiling single engine aircraft?

A service ceiling is not really an absolute limit on the altitude that a particular design can achieve, but one at which the aircraft begins to run out of climb capability. The absolute altitude is a measure of how high an aircraft can climb, when it runs out of any further climb capability, under normal-rated load.



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From FAA pilot handbook: The service ceiling is the altitude at which the aircraft is unable to climb at a rate greater than 100 feet per minute (fpm). The cruise ceiling, on the other hand, is the altitude at which the maximum climb rate is 300 fpm, though I've not seen it used much.

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The maximum height that a commercial airplane is allowed to reach when they fly is 42,000 feet, as this is the universally approved maximum altitude. This max altitude for airplanes is known as the “service ceiling.” Most commercial air jets fly at such a high altitude because it is known to optimize efficiency.

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A: The highest commercial airliner ceilings are 45,000 feet. It is not uncommon to fly at the certified ceiling of the airplane.

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The direct answer to your question is to prevent yawing caused by uneven acceleration of the engines. Q: Just based on engine noise levels, I can tell that the power being delivered by the engines varies greatly during takeoff, cruise, descent and landing.

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