Air India in dock for aircraft with less emergency-use oxygen

Air India is being investigated by the Directorate General of Civil Aviation (DGCA) for using a Boeing 777 with insufficient emergency oxygen on a recent Delhi-US nonstop flight. The pilot refused to operate the aircraft due to the oversight, and the DGCA has requested information from the airline. Most aircraft have enough oxygen for 12-15 minutes per passenger, but planes flying over high mountains, such as the Hindu Kush range, need extra oxygen for 25-30 minutes.