"We directed them to report on the slides' inspection status," Gregor added in an email. "Allegiant will do the inspections now that they're aware of the issue." Las Vegas-based Allegiant, which offers flights to leisure destinations such as Orlando and Fort Lauderdale in Florida and cities in Hawaii, operates 57 MD-80 aircraft, six Boeing 757-200 aircraft, and one Airbus A319. The MD-80 was made by McDonnell Douglas, which Boeing Co acquired in 1997. "We apologize for the disruption to our passengers and ask that they please remain patient as we work to correct the issue, reschedule affected flights and accommodate any passengers impacted," said Andrew Levy, president of Allegiant Travel, said in a statement. Allegiant shares closed down $5.08 at $97.91 on the Nasdaq.