The U.S. Federal Aviation Administration and Boeing have privately issued notifications that the fuel switch locks on Boeing planes are safe.

This comes after the release of a preliminary report into the Air India crash last month, which thrust Boeing engine fuel cutoff switches into the spotlight.

Fuel switch locks have come under the scanner after a 2018 advisory from the FAA figured in the Aircraft Accident Investigation Bureau (AAIB)'s preliminary investigation report on Air India's Boeing 7