India, July 14 -- The Directorate General of Civil Aviation has instructed all domestic airlines operating Boeing jets to conduct checks on switches that regulate fuel supply to the engines on those planes.

The airlines have been given a deadline until July 21 to complete these checks and confirm compliance.

Only two Indian airlines operate the Dreamliner - Air India and IndiGo.

Air India has around 30 of these planes, including the 787-8 and -9 variants, while IndiGo has just begun flying the 787-9.

The DGCA notification follows concern over a preliminary report into the June 12 Air India crash, in which a Boeing 787-8 Dreamliner crashed 32 seconds after take-off from Ahmedabad airport.

The report said: "The aircraft achieved the ma...