An aviation expert refutes western media's speculation about the cause of the recent Ahmedabad-London Air India crash, arguing that their mathematical reasoning is flawed.

With conclusive information hard to come by weeks after the fatal Air India crash, the aviation industry has shifted its focus to possible pilot error.

On Saturday (July 12), the Aircraft Accident Investigation Bureau (AAIB) released its preliminary findings into the Air India crash in Ahmedabad in June. Shortly after its release, some media outlets and experts insinuated that pilot error was the reason for the tragedy.