The spokesperson added that crews were able to inspect and repair the aircraft overnight. A new aircraft — Airbus A319 — took customers on the outbound flight from Denver to Salt Lake City on Monday night. The outbound flight was delayed by over four hours.

A Delta Airlines flight flying from Detroit landed safely at Denver International Airport on Monday after a mid-flight mechanical issue damaged the plane’s nose.

Delta is working to figure out how one of its planes suffered nose damage. The discovery was made when the flight landed in Denver after leaving Detroit.