PITTSBURGH — (WPXI) – A Delta Air Lines flight slid off a runway at Pittsburgh International Airport Wednesday evening. Officials said shortly before 6:30 p.m., Delta Air Lines flight 2231 heading to Atlanta slid off a taxiway, which is adjacent to the runway. There were 77 people on board. No injuries were reported. The plane involved was a Boeing 717, which has three seats on one side and two seats on the other in the main cabin. Heavy snow showers were pushing through the region Wednesday evening, but it is not clear at this point if weather was a factor in the incident. It took several hours for emergency crews to get there and get people off the aircraft. A slide could not be used to get people off the plane due to the angle of the plane. Firefighters had to use ladders. Buses were used to shuttle people back to the terminal. A spokesperson for Delta said many passengers chose to continue their travel late Wednesday night on an alternate aircraft it provided. Others left Thursday morning on a regularly scheduled flight. The plane was cleared from the area late Thursday afternoon.