The Aircraft Accident Investigation Report (AAIB) released its preliminary report on the Air India plane crash in Ahmedabad last month, and indicated a possible fuel switch as the reason behind the accident that killed at least 274 people. Weather conditions posed no threat, skies were clear, visibility was good, and winds were light. Yet, within seconds, the fuel control switches for Engine 1 and Engine 2 moved from the "RUN" to "CUTOFF" position, one after the other, within a one-second interval.