Campbell Wilson told staff in a memo that the pilots had passed a mandatory preflight breathalyzer test.

New and troubling questions are emerging about what caused the Air India crash that killed 260 people. A preliminary investigation ruled out mechanical issues and found that the plane's fuel cutoff switches had been flipped seconds after takeoff.

The Aircraft Accident Investigation Bureau (AAIB) had requested the global media to ‘respect sensitivity’ of the family members of the persons who died in the Air India plane crash

Officials said that both pilots had successfully passed the Class I medical examination within the past two years, a test that assesses their mental and physical fitness.