The families of four passengers killed in the June 12 crash of an Air India Boeing 787 said in a lawsuit that the accident resulted from allegedly faulty fuel switches, which the US Federal Aviation Administration has said do not appear to have caused the accident that killed 260 people.

The lawsuit filed on Tuesday in Delaware Superior Court blames Boeing and Honeywell, which made the switches, for the crash seconds after Flight 171 took off for London from the Indian city of Ahmedabad.

The plaintiffs point to a 2018 FAA advisory that recommended, but did not mandate, operators of several Boeing models, including the 787, inspect the fuel cutoff switches' locking mechanism to ensure it could not be accidentally moved.

India's Aircraft Accident Investigation Bureau's (AAIB) preliminary

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