An Air India pilot was dramatically removed from duty at Vancouver International Airport on December 23, 2025, after failing two breathalyzer tests prior to operating Flight AI186 bound for Delhi via Vienna. The Royal Canadian Mounted Police (RCMP) arrested the pilot following a 'report of concern' regarding an airline crew member's fitness for duty. Transport Canada, Canada's aviation regulator, promptly labeled the incident a "serious matter" and issued a formal letter to Air India, demanding a thorough investigation under its safety management system. The Canadian authorities have given Air India until January 26, 2026, to provide its findings and detail the corrective actions taken to prevent future occurrences. This incident is considered a contravention of Canadian Aviation Regulations (CARs) and conditions outlined in Air India's Foreign Air Operator Certificate. Air India confirmed the last-minute delay of Flight AI186 and stated that an alternate pilot was rostered to ensure the flight's safe departure, albeit several hours late. The airline has reiterated its "zero-tolerance policy towards any violation of applicable rules and regulations" and confirmed that the pilot has been taken off flying duties pending the outcome of the internal inquiry. This event has drawn significant scrutiny to aviation safety standards, particularly concerning pilot conduct and adherence to alcohol consumption regulations for airline crews operating international flights. The Directorate General of Civil Aviation (DGCA) of India also holds primary responsibility for regulatory oversight of Air India, and the Canadian action ensures engagement with Indian aviation authorities for appropriate follow-up.