An Air India pilot operating flight AI 151 from Zurich to Delhi on September 6 was grounded and removed from the aircraft after ground staff noticed him smelling of alcohol.
Sobriety tests confirmed his blood alcohol content exceeded permissible limits, prompting Switzerland's civil aviation regulator to initiate an inquiry under local regulations.
The Swiss Federal Office of Civil Aviation stated that jurisdiction for further handling rests with India's Directorate General of Civil Aviation, while Air India issued no official comment.