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

A United Airlines flight bound for Puerto Rico made an emergency landing at Newark Liberty International Airport on Saturday morning, according to the FAA. The flight returned to Newark around 10 a.m.

A United Airlines flight from Nigeria to the US was forced to make an emergency landing in Lagos early Friday. The flight from Lagos to Washington D.C. turned back after the aircraft — a Boeing 787-8 — experienced a technical issue and "an unexpected aircraft movement,

None of the 167 passengers or six crew on the flight were hurt during the incident, which occurred at Chicago O'Hare.

The Federal Aviation Administration (FAA) said it is investigating a recent near-midair collision of flights that were approaching Phoenix Sky Harbor International Airport. A Delta Air Lines flight, as well as a United Airlines flight “landed safely” following “a loss of required separation” while both en route to the Phoenix airport,

United Airlines struggled significantly with air traffic control-related delays at its congested airport hubs last year as the Federal Aviation Administration still lacks sufficient numbers of controllers,

United Airlines Flight 1724 from San Francisco and ... the other aircraft was nearby," according to a statement from the FAA, and both were able to land safely after receiving corrective ...

United Airlines said Flight 1727, scheduled to fly from Chicago O ... Birds account for the vast majority of those strikes, FAA data shows, while thousands of others have been attributed to flying mammals (specifically bats) and terrestrial animals ...

Donald Trump ordered the immediate end to diversity, equity and inclusion programs in the Federal Aviation Administration.

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.

A United Airlines passenger jet struck a coyote on the runway during takeoff in Chicago, forcing the flight to return to O’Hare International Airport to have the landing gear examined.

CHICAGO (WLS/CNN/CNN Newsource/WKRC) - A United Airlines flight returned to the airport after striking a coyote during takeoff. A United Airlines flight was forced to return to Chicago O'Hare Airport on Sunday after the aircraft struck a coyote during takeoff.