The 15th edition of the Biennial Aero-India International Seminar commenced in Bengaluru, Karnataka on Saturday, Ministry of Defence said in an official statement. The two-day seminar has been organised by the Centre for Military Airworthiness & Certification (CEMILAC) of the DRDO in association with the Aeronautical Society of India (AeSI) as a prelude to Aero India 2025.