An Air India A320 aircraft, VT-EXO, operating flight AI2379 from Phuket to Delhi last week, experienced a sudden drop in altitude by approximately 300 feet, injuring at least 17 passengers and crew members. The incident occurred on August 4 while the aircraft was cruising. The autopilot disconnected during the flight, causing the co-pilot to take manual control. Subsequently, a flight-control stall message appeared, and several indicator switches went off due to technical problems. Additionally, triple hydraulic failures occurred, which are crucial for several aircraft functions like flight controls. Investigators will examine the sequence of these failures and their potential link to the altitude loss. The Directorate General of Civil Aviation (DGCA) has classified the incident as a "Serious Incident," with the Aircraft Accident Investigation Bureau probing the circumstances surrounding it. Airbus, the manufacturer of the A320, and French aviation accident investigation agency BEA are expected to assist Indian investigators. The crew eventually managed to stabilize the aircraft and safely land in Delhi. Passengers reported a sudden drop inside the cabin during turbulence. The incident also prompted mandatory drug screening for the pilots, with initial test results requiring further analysis. Both pilots have been temporarily grounded pending confirmatory test results and completion of the investigation.