The helicopter that broke apart mid-flight and plunged into the Hudson near Jersey City last week, killing the pilot and a family of five, flew more than 8,000 missions in the New York area during the last five and a half years, according to a flight history database compiled by the aviation consultancy FlightAware.
"Our testing process is very exact. Beyond collecting standard acoustic data, each team member must agree, unanimously and unhesitatingly, that natural quiet prevailed throughout the testing period."