A window panel of an Air India aircraft with over 240 passengers on board broke away soon after take off following turbulence last week. Three passengers also suffered minor injuries due to the turbulence on the flight from Amritsar to New Delhi on April 19, PTI said quoting airline officials. Air India, aviation regulator Directorate General of Civil Aviation (DGCA) and Aircraft Accident Investigation Board (AAIB) are probing the incident.