One year has passed since the Air India flight AI-176 plunged into the Arabian Sea, killing all 249 on board. Yet the investigation remains mired in uncertainty. As a science correspondent, I have sifted through the available data, and the gaps are glaring. Here are the six most pressing unanswered questions.
First, the cockpit voice recorder stopped 22 seconds before impact. Why? The device, built to withstand extreme forces, failed without warning. Preliminary analysis suggests a power surge, but the origin of that surge is unknown. Without those final seconds, investigators are missing a critical piece of the narrative.
Second, the flight data recorder shows a sudden deviation in heading three minutes prior to the crash. The aircraft turned 40 degrees left, then right. This is inconsistent with standard procedures and weather conditions that night. Was it pilot error, a system malfunction, or something else?
Third, radar data indicates an unidentified secondary object within 5 nautical miles of the aircraft at the time of the turn. Air traffic control denies knowledge of any nearby aircraft. If it was a drone or military asset, it should have been logged. If not, what was it?
Fourth, the debris field is oddly constrained. The main wreckage lies within a 2-kilometre radius, but the fatalities suggest a high-energy impact. Typically, such impacts scatter debris widely. The pattern is more consistent with a controlled descent than a catastrophic failure. Why?
Fifth, toxicology reports for the pilots were inadvertently delayed by six months. When finally released, they showed no impairment. But the delay itself raises questions about chain of custody and potential contamination. Standard protocol was not followed.
Sixth, the airline has refused to release maintenance logs for the aircraft’s avionics suite, citing a parallel safety investigation. Why the secrecy? The avionics are central to understanding the turn and power failure. Without access, independent analysts cannot verify the official narrative.
These questions are not just academic. They erode public trust in aviation safety and the investigation process. The official report, due in three months, must address them directly. Until then, the families of the 249 victims wait for answers that should have been clear already. The physical evidence exists. It is time to share it fully and transparently.
