Here is a photo of a standard PSA Airlines Bombardier CRJ700 series regional jet, from the American Airlines website.
"A PSA Airlines Bombardier CRJ700 regional jet collided in midair with a Sikorsky H-60 helicopter while on approach to Runway 33 at Reagan Washington National Airport around 9 p.m. local time.
An NTSB-led investigation is in full swing to identify factors that led to the Jan. 29 midair collision between an American ...