Cracked window forces Southwest flight diversion

It's the second instance of a cracked window in two weeks.

There were no injuries reported among the 81 passengers, who will now be flown to Newark on a new aircraft, Southwest told ABC News. There were no reports of cabin depressurization and "initial indications" show the crack only appeared on the external pane of the window, the airline said, noting that the window has multiple panes. It was inspected last month.

The Boeing 737-700 “has been taken out of service for maintenance review,” Southwest said in a statement.

Social media images show cracks streaking across what's apparently the same window.

Hirsch Chinn, a passenger on the flight, told ABC News that other passengers on board quickly changed seats upon discovering the cracked window.

"Crew was fabulous," Chinn about the flight's staff.