A United Airlines plane reportedly made an emergency landing just days after an emergency slide opened midair on the same jet

• A United flight made an emergency landing after smoke filled the cockpit, per Aviation Herald.
• The jet was flying from Chicago to Zurich on Wednesday when it was forced to turn back.

A United Airlines plane made an emergency landing after smoke reportedly filled the cockpit just days after an evacuation slide was accidentally deployed midair on the same aircraft.

The Aviation Herald reported that a United Boeing 767-300 travelling from Chicago O'Hare airport to Zurich, Switzerland on Wednesday was forced to turn back due to "uncontained heat and smoke on the flight deck."

According to FlightRadar, a site that tracks aircraft movements, N666UA departed at 3:50 p.m. before diverting over Alpena, Michigan and landing at O'Hare about three hours after its departure.

The Herald reported the jet had the same registration number as the United flight that accidentally deployed an emergency evacuation slide in midair on July 17.

The slide landed in Chicago resident Patrick Devitt's yard, CNN affiliate WLS reported, with members of his family members discovering the slide after hearing a loud noise.

The Federal Aviation Administration said maintenance crew discovered that the slide was missing after the jet landed at Chicago O'Hare.

At the time, a United representative told Insider: "We immediately contacted the FAA and are working with our team to better understand the circumstances around this matter."

United didn't immediately respond to a request for comment from Insider, made outside normal working hours.