The Federal Aviation Administration said on Thursday that Denver air traffic control lost communications for about two minutes on Monday but was able to maintain contact through an emergency frequency.

A portion of the Denver air route traffic control center experienced a 90-second loss of communications late Monday, the Federal Aviation Administration said in a statement.

The Federal Aviation Administration is investigating a Monday failure of air traffic controllers' radio at Denver International Airport — one of the world's busiest airports, per an FAA statement. Why it matters: It's the latest in a string of alarming tech and safety lapses nationwide that's shaking confidence in the U.