Aircraft upset is a dangerous condition in aircraft operations which may result in the loss of control of the aircraft, and sometimes the total loss of the aircraft itself. Loss of control may be due to turbulent weather, pilot disorientation, or a system failure.
The U.S. NASA Aviation Safety Program defines upset prevention and upset recovery as to prevent loss-of-control accidents due to aircraft upset after inadvertently entering an extreme or abnormal flight attitude.
A Boeing-compiled list determined that 2,051 lives were lost in 22 accidents in the years 1998–2007 due to LOC accidents. NTSB data for 1994–2003 count 32 accidents and more than 2,100 lives lost worldwide.
Read more about Aircraft Upset: Overview, Detailed Definition, Jet Upset, Related Accidents
Famous quotes containing the word upset:
“They will tell you tough stories of sharks all over the Cape, which I do not presume to doubt utterly,—how they will sometimes upset a boat, or tear it in pieces, to get at the man in it. I can easily believe in the undertow, but I have no doubt that one shark in a dozen years is enough to keep up the reputation of a beach a hundred miles long.”
—Henry David Thoreau (1817–1862)