NEW DELHI: India has ordered its airlines to examine fuel switches on several Boeing models after they came under scrutiny following last month´s crash of an Air India jet which killed 260 people.

A preliminary report, issued Saturday by India’s Aircraft Accident Investigation Bureau, found that the switches had flipped from run position to cutoff shortly after takeoff.

The report did not offer any conclusions or apportion blame for the June 12 disaster, but indicated that one pilot asked the other why he cut off fuel, and the second pilot responded that he had not.

India’s Directorate General of Civil Aviation (DGCA) issued the order Monday to investigate the locking feature on the fuel control switches of several Boeing models including 787s and 737s.

The order came after Boeing notified operators that the fuel switch locks on its jets were safe.

But it was in line with a Special Airworthiness Information Bulletin (SAIB) issued by the US Federal Aviation Administration, which recommended inspection of the locks to ensure they could not be moved accidentally.

Several Indian and international airlines have already begun their own inspections of fuel switches.

“It has come to the notice of DGCA, that several operators — internationally as well as domestic — have initiated inspection on their aircraft fleet as per the SAIB,” DGCA said in a statement.

In view of the SAIB, all airline operators of the affected aircraft must complete the inspection by July 21, it added.

The Boeing 787-8 Dreamliner was headed from Ahmedabad in western India to London when it crashed, killing all but one of the 242 people on board as well as 19 people on the ground.

In a letter to employees on Monday, Air India CEO Campbell Wilson said the investigation into the crash was ongoing and it would be unwise to jump to “premature conclusions”.