CHICAGO -- For the second time this week, a Southwest Airlines plane has aborted a takeoff at Chicago's Midway International Airport.
Federal Aviation Administration spokeswoman Elizabeth Isham Cory says the crew reported an engine problem Friday and the FAA will investigate.
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Southwest said the Philadelphia-bound plane with 136 passengers returned to the gate after the pilot of another Southwest aircraft saw "potential signs of a mechanical issue."
Spokeswoman Emily Samuels says an initial review found nothing wrong but the aircraft remains in maintenance.
On Wednesday night, a Southwest plane headed to Boston from Midway cut short its takeoff because of a mechanical issue. The Fire Department said one of that plane's engines caught fire.
In another incident at Midway, ground equipment struck a Southwest plane and a jet bridge Thursday. No one was injured.
AP
File - In this Feb. 3, 2014 file photo, a Southwest Airlines jet plane lands at Love Field in Dallas. (AP Photo/LM Otero, File)