New Delhi, July 23 -- Air India said on Tuesday it has completed inspections of fuel control switches on all its Boeing 787 and 737 aircraft, in line with directives from the Directorate General of Civil Aviation. The inspections come amid intense scrutiny of fuel control switches following the Air India Flight 171 crash that killed 260 people in June. The preliminary probe report by the Aircraft Accident Investigation Bureau (AAIB) found the aircraft's fuel switches were set from "run" to "cutoff" position during take-off, starving the engines in what is likely the direct cause of the crash. How the switches were set to that position - whether deliberately (and by whom) or due to some other factors - is now at the centre of the investigati...