印航787坠机调查现关键线索：应急发电机启动引发动机故障疑云

Core Insights - The investigation into the crash of Air India Flight 171 has revealed that the emergency generator was operational at the time of the incident, raising questions about the normal functioning of the aircraft's engines during takeoff [1] Group 1: Investigation Findings - Investigators have identified that the emergency system, known as the Ram Air Turbine (RAT), was deployed, which serves as a backup generator for the aircraft [1] - The RAT is designed to activate automatically in cases of dual engine failure or when hydraulic system pressure is critically low, as well as in situations where cockpit instruments lose power [1] - The investigation is focusing on whether there was a loss of thrust or descent prior to the crash, although it remains unclear whether the emergency system was triggered by engine issues, hydraulic system failures, or other factors [1] Group 2: Industry Context - Dual engine failure in commercial aviation is extremely rare, given the advancements in engine efficiency and reliability [1] - The findings from this investigation may have implications for the Boeing 787 Dreamliner and its operational protocols, particularly concerning the reliability of its systems [1]