A United Airlines jet lost a landing-gear wheel during take off from Los Angeles, but was able to land safely in Denver, its planned destination, with no injuries, the airline said, writes The Guardian.

“The wheel has been recovered in Los Angeles, and we are investigating what caused this event”, United said in a statement. It was the second such incident for the airline this year.

The aircraft involved in Monday’s incident was a nearly 30-year-old Boeing 757-200, according to FlightRadar24 data, which was carrying 174 passengers and 7 crew members. Boeing ended production of the 757 in 2004.

In March, a United Airlines Boeing 777-200 jet headed for Japan lost a tire mid-air after takeoff from San Francisco, landing safely at Los Angeles International Airport.

The wheel landed on a car in an airport employee parking lot, breaking a car window, but no one was hurt.