NEW DELHI – The captain of an Air India flight that suddenly lost about 300 feet of altitude last week has officially tested positive for marijuana. Key TakeawaysDrug Test Failure: The captain of the Air India Phuket-Delhi flight tested positive for marijuana in a final confirmatory screening. The captain of the Air India Phuket-Delhi flight tested positive for marijuana in a final confirmatory screening. Ongoing Investigation: Air India refuses to comment while the Aircraft Accident Investigation Bureau conducts a highly detailed safety probe. They discussed the ongoing safety investigation and successfully explored ways to strictly improve overall safety protocols for future flights.