MUMBAI — Air India's inspection of the locking feature on the fuel control switches of its existing Boeing 787 aircraft found no issues, an internal communication circulated within the airline said. The switches have come under scrutiny following last month's crash of an Air India jet that killed 260 people after a preliminary probe by Indian investigators found that they had flipped from run position to cutoff shortly after takeoff.

A cockpit voice recording of doomed Air India Flight 171 indicates the younger co-pilot asked his more experienced colleague why he turned off the plane’s fuel-supply switches, according to people familiar with the matter.

Air India's Chief Executive, Campbell Wilson, addressed employees regarding the AI171 crash. The preliminary investigation found no mechanical faults with the Boeing 787 Dreamliner. Checks were conducted on the entire 787 fleet.