Officials say that during the flight from Newark Liberty International Airport to Halifax, the captain experienced a medical episode and was removed from the flight deck.
"Engine failure, left engine, United 108 declaring an emergency. Mayday, mayday, mayday," the pilot said, according to recorded air traffic control audio.
Twenty-five people aboard a Delta Air Lines flight were hospitalized after the flight encountered significant turbulence, the airline said.
New video captures the frightening moment a Delta plane's engine burst into flames shortly after takeoff.
A regional jet made an emergency landing in Iowa Thursday evening after a passenger tried to open an emergency exit door and got into an altercation with a flight attendant, according to police.
An American Airlines flight returned safely to Las Vegas' Harry Reid International Airport shortly after takeoff due to a "mechanical issue."