No Fault in Fuel Switch? Big Update in Air India AI-171 Crash InvestigationThe AI-171 crash probe is nearing completion, but investigators have ruled out one major suspected cause. What did the fuel switch tests reveal, and what's still under investigation? Air India AI-171 Probe Nears End (Img: X)New Delhi: The investigation into the tragic Air India AI-171 crash, which claimed 260 lives, has entered its final stage, with the Centre informing Parliament that no defect has been found in the aircraft's fuel control switch or its locking mechanism. Officials said the findings from that examination will form part of the final investigation before the report is released.