For my research, I am using the FAA's definition of "loss of control":
"Loss of Control refers to accidents resulting from situations in which the pilot should have maintained or regained aircraft control but did not."
http://www.faa.gov/index.cfm/apa/105...9B2E02A8F969E4
See also: "Aerodynamic Principles of Large-Airplane Upsets"
http://www.boeing.com/commercial/aer...y/fo01txt.html
Regards
Trish