Detailed Definition
From: The FAA's Pilot Guide to Airplane Upset Recovery.
An airplane upset is defined as an airplane in flight unintentionally exceeding the 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.
Recovery to a stable flight path should be initiated as soon as a developing upset condition is recognized. This preventive action may alleviate what might otherwise develop into a very serious event.
Read more about this topic: Aircraft Upset
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