The two flights, United Airlines Flight 1724 and Delta Air Lines Flight 1070 came too close to each other while arriving at the airport.

The close call between the United and Delta flights at the Phoenix airport comes amid an increase in plane near-collisions.

The Federal Aviation Administration is once again looking into a close call at a major U.S. airport, after two passenger jets narrowly avoided a mid-air collision as they attempted to land in Phoenix.

Both aircraft were inbound to the airport when a loss of separation occurred during their approach for landing

The FAA has launched an investigation into a loss of separation between two commercial flights in Phoenix Saturday.

FAA officials say the two planes "landed safely after experiencing a loss of required separation" as they were headed to Sky Harbor.

At the same time, a similar alert was set off on United Flight 1724, flying on a Boeing 737-900, from San Francisco, carrying 123 passengers and six crew members. The FAA noted both planes landed ...

A Delta Air Lines plane and a United Airlines aircraft raised alarms when they flew too close to each other while flying into Phoenix on Saturday. The Federal Aviation Administration is investigating the “loss of required separation” incident.

The Federal Aviation Administration is investigating after a United Airlines flight and a Delta Airlines flight had a near-collision over Phoenix on Saturday.

The United and Delta flights were less than a quarter of a mile apart horizontally before the warning devices went off, officials say.

The two flights, United Airlines Flight 1724 and Delta Air Lines Flight 1070 came too close to each other while arriving at the airport.

At the same time, a similar alert was set off on a United Flight 1724 from San Francisco, carrying 123 passengers ... according to FlightRadar24. The FAA noted both planes landed safely "after experiencing a loss of required separation when they were ...