8/17/2019 3 Paragrafo-Definizione Upset

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First of all, it is necessary to establish a descriptive term and definition of "airplane upset".It's important to be clear on two factors. <break "strong">::</break><emphasis "high">First </emphasis>,,is the notion of unintentional.In other words:, the aircraft is not doing what it was being commanded to do, and is approaching unsafe parameters.<emphasis "high"> Second: </emphasis>is the fact that, a pilot must not wait until the airplane is in a fully developed and definable upset, before taking corrective action to return to stabilizedflight path parameters.Therefore, in order to identify acceptable references that define a developed <prosody +5%> upset </prosody> condition, the following values were agreed upon.An airplane upset is defined as an airplane in flight unintentionally exceedingthe parameters normally experienced in line operations or training. In other words, the airplane is not doing what it was commanded to do and is approaching unsafe parameters.While specific values may vary among airplane models, the following unintentional conditions generally describe an airplane upset:· Pitch attitude greater than 25 deg, nose up.· Pitch attitude greater than 10 deg, nose down.· Bank angle greater than 45 deg.· Within the above parameters, but flying at airspeeds inappropriate for the conditions