Transcript for American Airlines Flight Forced to Land After Potential Bird Strike
Now to a mystery in the sky. An American airlines flight from North Carolina to Connecticut forced to make an emergency landing last night after something caused the windshield to crack. ABC's David Kerley is in Washington with the latest. Good morning, David. Reporter: It is a big question this morning. How did a jet's windshield crack, really shatter in flight when it didn't hit birds, didn't fly through weather. The American airlines flight was headed to Connecticut south of philly and the first officer sees this crack in front of him and windshield shattering on the a319 and asked for an emergency landing in filly. Here's what they told air traffic control. Ah, yeah, the right windshield is completely shattered. They landed safely, the 114 passengers got on another jet to continue their flight. We have seen in the past what hail can -- and birds can do to windshields. Remember those pictures from Denver hail shattering both sides but American says weather and birds were not a factor last night so they will be looking for other causes, was it a defect, something else? But because philly was a hub the windshield was replaced overnight and that jet will be back in service today. Hopefully they'll find out what happened. All right, David, thank you.
This transcript has been automatically generated and may not be 100% accurate.