BIRMINGHAM, Ala. (AP) Airline officials say a cracked windshield prompted the unscheduled landing of a passenger jet in Birmingham, Alabama. <br />
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ExpressJet spokesman Jarek Beem tells Al.com the plane carrying 20 passengers departed Atlanta and was headed for Tulsa, Oklahoma but landed at the Birmingham-Shuttlesworth International Airport on Saturday morning. <br />
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Beem says passengers were put on a replacement plane that was sent from Atlanta. <br />
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Beem says it's unclear what caused the plane's windshield to crack but says it was probably something the happened while the plane was in flight. <br />
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ExpressJet is a regional airline headquartered in Atlanta and serves more than 190 airport in the U.S., Canada, Mexico and the Bahamas.