The preliminary report into Air India Flight 171 said the fuel was cut off to both engines seconds after liftoff, and cited a 2018 FAA advisory.

Domestic Indian airlines were ordered to carry out inspections of fuel switches on Boeing aircraft in their fleets by the country's aviation regulator in the wake of last month's deadly Air India crash.

India on Monday ordered its airlines to examine fuel switches on several Boeing models while South Korea ordered a similar measure on Tuesday, as scrutiny intensified of fuel switch locks at the centre of an investigation into a deadly Air India crash.