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useful for the safe and efficient conduct of flights. Flight Level. A surface of constant atmospheric pressure which is related to a specific pressure . datum, 1013.2 hPa, and is separated from other such surfaces by specific pressure intervals. Note 1. A pressure type altimeter calibrated in accordance with the Standard Atmosphere:
This manual contains the information required to cover the ATPL (A) and CPL (A) Learning Objectives for the EASA subject 081 - Principles of Flight. The examination in this subject is from 0930 to 1030 on the first day of the examinations for ATPL candidates and contains 40 questions.
Introduction: An altimeter is a type of barometer which measures the vertical distance to the surface, necessary for a pilot to maintain the desired or assigned altitude during flight. Maintaining a current altimeter setting is critical because the atmosphere pressure is never constant.
This document, also known as the Chicago Convention, comprises 96 articles outlining general principles and providing authority for international aviation structures. The Document is supported by 18 annexes which detail Standards and Recommended Practices covering all aspects of aviation.
Strictly speaking a flight level is an indication of pressure, not of altitude. Only above the transition level (which depends on the local QNH but is typically 4000 feet above sea level) are flight levels used to indicate altitude; below the transition level feet are used.
With Standard Pressure (1013.2 mb) set, an aircraft altimeter indicates Pressure Altitude (Flight Level), and is used by all aircraft operating above the transition altitude to provide a common datum for vertical measurement.
1. the dynamic pressure in the undisturbed flow and in the throat are equal. 2. the total pressure in the undisturbed flow and in the throat are equal. A) 1 is correct and 2 is incorrect. B) 1 is incorrect and 2 is correct. C) 1 and 2 are correct. D) 1 and 2 are incorrect. The units of the density of the air (I) and the force (II) are:
