AI Phuket-Delhi flight incident: All 3 hydraulics failed in ‘exceptionally rare’ event

‘Exceptionally rare’ failure of all 3 hydraulicsMUMBAI: Aircraft Accident Investigation Bureau's preliminary report has confirmed what pilots and engineers call an exceptionally rare event, the near-simultaneous loss of all three hydraulic systems on the A320neo aircraft at 36,000 feet. Hydraulic systems are the fluid-pressure circuits that physically move an aircraft's wing and tail surfaces. The green, blue and yellow systems dropped out within seconds of each other, triggering an autopilot disengagement, a stall warning and a brief altitude upset that injured 24 flyers.The accident occurred when the eight-year-old A320neo (VT-EXO) carrying 145 people had just been cleared to climb from 34,000 feet to 36,000 feet after entering the airspace controlled by Kolkata ATC. At 9:32:43am IST, wi