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.

The US Federal Aviation Administration and Boeing have privately issued notifications that the fuel switch locks on Boeing planes are safe, with the FAA saying they are safe, a document seen by Reuters showed.

The US Federal Aviation Administration (FAA) has said the fuel control switches in Boeing aeroplanes are safe, following their reported involvement in a fatal Air India crash that killed 260 people in June.