The persistent chime of a bell is believed to be the signal for engine fire, which is believed to have only commenced once the airplane was past the flight's decision speed, which allows them to abort takeoff. This means UPS Flight 2976 was past the critical point, where the aircraft could've aborted takeoff, and remained on the runway.

An investigation is underway as to what caused the UPS plane crash at the Louisville Airport that left 12 people dead and 15 injured.

The cockpit voice recorder of the UPS cargo jet that crashed in Louisville on Tuesday revealed the sound of a bell heard in the cockpit.

A Delta Air Lines plane aborted its takeoff Wednesday morning after a window came open in the cockpit.Delta Flight 2261, a Boeing 737 scheduled to fly from Minneapolis to Las Vegas, was rolling down the runway at “low speed” with 155 people onboard ...