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The unexpected deployment of the emergency power system on Air India Flight 117 during its landing approach at Birmingham on October 4 has been revealed to be part of a worrying global trend affecting dozens of Boeing 787-8 Dreamliner aircraft.

The incident involved the aircraft’s Ram Air Turbine (RAT), a critical safety feature designed to deploy automatically to generate emergency electrical and hydraulic power only in the event of a total failure of both engines or the main electrical systems. On flight AI117 from Amritsar to Birmingham, the RAT, a small wind-powered turbine, folded out of the fuselage while the jet was at a low altitude (reported between 400 and 1,600 feet) on its final approach. Despite the uncommanded deployment, Air India confirmed the ai

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