A Qantas aircraft that made an emergency landing in Sydney on Friday could return to the skies as early as this week as engineers work to replace the right engine of the Boeing 737-800. A Qantas aircraft that made an emergency landing in Sydney on Friday could return to the skies as early as this week as engineers work to replace the right engine of the Boeing 737-800. Accidents and Emergency Incidents, Air Transport Industry, Fires Latest business news