The planes, carrying more than 350 people, experienced "a loss of required separation" while preparing to land at the same Phoenix airport, the FAA said.

Amazon halts drone deliveries in Texas and Arizona, citing possible safety concerns with its MK30 drone software.

The pilots talked to air traffic controllers who appear to have directed the planes to "resequence," and flight data appears to show both making a circle before landing safely.

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

Amazon has paused all drone deliveries in Arizona.Currently, Amazon’s Tolleson, Arizona, facility and College Station, Texas, facility are the only ones in the country that offer Air Prime.Air Prime uses autonomous drones to deliver packages weighing up to 5lbs to customers in 30 minutes or less.

An Amazon spokesperson said an incident that involved a crash at a testing facility in Oregon was not the primary reason for the pause.

Amazon's drone delivery pauses in Texas and Arizona due to software fix after two crashes. Industry expects business to be $10B by decade's end.

Arizona's Executive Budget boosts highway maintenance funding and aids rural areas in securing federal grants.

Amazon has temporarily suspended its commercial drone delivery operations in Texas and Arizona after two of its latest MK30 models crashed in rainy weather at a testing facility. The company announced on Friday that it was pausing the program to implement software updates to ensure the safety of its fleet.

The e-commerce industry continues to surprise with its ongoing transformations, particularly in the area of logistics. Recently, Amazon temporarily suspended its commercial drone delivery operations in Texas and Arizona after two of its latest MK30 models crashed at a testing facility during light rain.

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.

The FAA said it is investigating after a Delta Air Lines flight and United Airlines flight experienced 'a loss of required separation' while heading inbound to Phoenix Sky Harbor International Airport.