A preliminary report into the tragic Air India 171 crash that killed 260 people has sparked fury from grieving families and pilots alike, as it raises more questions than it does answers

Boeing and the United States Federal Aviation Agency (USFAA) recently notified that the fuel switch locks used in flight are safe, as per a report from Reuters. This comes at a time when the fuel switch lock mechanics have come under scrutiny amid the ongoing investigation into the Air India AI 171 crash.

Investigators are probing the wreckage and cockpit recorders to understand what went wrong just after take-off. The Air India flight climbed to 625 feet in clear weather before losing location data about 50 seconds in, according to the FlightRadar24 website.