It defines an “accident” as any occurrence that caused serious injury, death or significant damage to the aircraft. A “crash” is defined as any accident that has the potential to kill everyone on the airplane, and there have been no “crashes” by that definition among major U.S. airlines in the study period.

http://www.flyingmag.com/technique/accidents/website-reveals-nine-most-common-airline-accidents

http://247wallst.com/2013/04/24/the-nine-most-common-airplane-accidents/

http://247wallst.com/2013/04/24/the-nine-most-common-airplane-accidents/2/