A fresh wave of safety concern has hit Air India following an unusual mid-air incident where the Ram Air Turbine (RAT)—the aircraft’s last-resort emergency power system—unexpectedly deployed on a Boeing 787-8 Dreamliner while on its final approach to Birmingham. The flight, originating from Amritsar, landed safely, and all passengers were reported safe. However, the uncommanded activation of such a critical safety mechanism, which typically deploys only during a catastrophic dual-engine or total power failure, has prompted an immediate investigation.
The incident is particularly alarming as it involves the exact same aircraft model that was tragically involved in the fatal Ahmedabad crash only months ago, an accident that claimed 260 lives. The preliminary investigation into that earlier disaster also noted the deployment of the RAT moments after take-off, triggered by the unintended shutdown of both engines due to a fuel control switch error. The latest scare immediately resurrects haunting memories of that tragedy, highlighting potential systemic issues with the Dreamliner model or its operation.
The core mystery in the current event lies in the fact that, despite the RAT's deployment, a check of the aircraft’s systems revealed that all electrical and hydraulic parameters were functioning normally. The RAT is designed to swing down from the fuselage to use the air stream to generate emergency power and hydraulic pressure when primary power sources fail. Its unexpected activation while all primary systems were operational suggests a significant technical anomaly or sensor malfunction, rather than an actual in-flight emergency.
Air India has confirmed the incident, stating that the operating crew of flight AI117 detected the RAT deployment during the final descent before the safe landing at Birmingham Airport. In response, the airline has immediately grounded the aircraft for comprehensive technical checks to determine the root cause of the deployment, resulting in the cancellation of the return flight, AI114, from Birmingham to Delhi.
The Ram Air Turbine is an aviation last-resort lifeline, capable of generating just enough power to keep essential flight controls, navigation, and communication systems operational, allowing pilots to steer the aircraft to a safe emergency landing. The device’s sudden and seemingly unnecessary deployment in a non-emergency scenario is considered an extremely rare occurrence and demands urgent regulatory and engineering scrutiny.
As authorities commence a detailed technical assessment, the findings will be crucial. Investigators will examine whether the event was caused by a mechanical fault, a sensor glitch, or a software anomaly. Given the recent history of the Boeing 787-8 model with the airline, safety experts and passengers are demanding clear and transparent answers to restore confidence in the operations of the flagship Dreamliner fleet.