One year after Air India Flight 172 plunged into the Arabian Sea, the wreckage still lies silent on the seabed. In its debris field lie not just twisted metal and human remains but six fundamental questions that continue to evade resolution. As a scientist who has studied causality in complex systems, I find this absence of answers deeply troubling. The crash was not an act of god; it was a cascade of failures, and the gaps in our understanding represent critical missing pieces in the puzzle of aviation safety.
First, what caused the sudden loss of cabin pressure? Black box data shows a depressurisation event at 34,000 feet, but the origin remains unclear. Was it a maintenance oversight, structural fatigue, or something else entirely? The cockpit voice recorder captured the captain's calm report of "pressure failing," but the reasons are unknown.
Second, why did the crew not follow emergency oxygen protocols? The transcript reveals confusion: "Masks on?" asks the first officer. The captain replies, "Not yet." Thirty seconds later, all communications ceased. Hypoxia sets in within seconds; a delay of thirty seconds is catastrophic. But why the hesitation? Were they distracted? Disoriented? The answer lies in the final moments, which remain opaque.
Third, what was the role of the flight management system? The aircraft was on autopilot when it entered a steep descent. The flight data recorder shows erratic inputs, but was the system corrupted or overridden? Investigators have found no evidence of cyber intrusion, but the possibility lingers.
Fourth, why did the aircraft's advanced weather radar not detect the microburst that may have contributed to the loss of control? Satellites recorded convective activity in the region, but the radar showed clear skies. Was it a calibration error or a software anomaly?
Fifth, what happened to the cockpit door communication? The last signal from the aircraft came from the transponder; the cockpit door intercom was never activated. Was there a struggle? A medical emergency? The absence of any distress call suggests something beyond human failure.
Sixth, and most haunting, why did the aircraft's automatic dependent surveillance broadcast stop transmitting exactly 12 minutes before impact? This silence created a gap in the flight path that still puzzles investigators. Was it a deliberate shutdown or a systems failure?
These questions are not academic. Each unanswered query represents a risk that remains unmitigated for every passenger flying today. The aviation industry has made great strides, but as a scientist, I know that certainty is our only true defence. Until we know why 178 people died, we cannot say we have truly learned from this tragedy. The wreckage holds the clues; the public deserves the answers.
