[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/08/11/goldfarb.michael.cnn.art.jpg caption="Fmr. FAA Chief of Staff Michael Goldfarb says the time is past due to restrict the airspace over the Hudson River."] Saturday’s midair collision of a sightseeing helicopter and a single-engine plane over the Hudson River killed nine people. That crash is now raising some new questions about air safety over the … Continue reading Expert: Restrict Hudson River airspace