NEW YORK (WABC) -- Sunday's fatal helicopter crash in the East River is the third crash involving a 'Liberty Helicopters' chopper in the past 11 years
In August 2009, nine people were killed after a sightseeing helicopter carrying Italian tourists collided mid-air with a small, private plane over the Hudson River. Investigators determined the chopper was flying too high.
RELATED: Flight radar map shows exact path helicopter took over East River
In July 2007, a Liberty Sightseeing chopper carrying eight people dropped into the Hudson River. An off-duty paramedic on board helped everyone escape.
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Fatal helicopter crash is third involving 'Liberty Helicopters' company in past 11 years