The flight crew forgot to select the "bleed switch" that normalises cabin pressure, leading to nose and ear bleeding of 30 passengers.
A cockpit mix-up left more than 30 passengers on an Indian plane bleeding from their ears and noses after the crew reportedly forgot to flick a switch regulating cabin air pressure.
The incident took place onboard the flight 9W 119, a Boeing 777 that had 324 passengers and 14 crew members onboard.
In a statement, the airline said the flight landed safely in Mumbai and first aid was given to affected guests. The people had to use oxygen masks to breathe. It added that 144 of the original flight's passengers have been transported to Jaipur on a different flight, and 17 decided "to travel at another point in time".
Civil Aviation Minister Suresh Prabhu ordered the DGCA to prepare a safety audit plan.
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Videos of the incident taken by passengers quickly went viral on social media, focusing public attention on the airline at a time when it is struggling to cut costs and embroiled in a pay dispute with pilots.
Chief Operating Officer of Dr Balabhai Nanavati Hospital Rajendra Patankar said preliminary tests showed the five passengers suffered barotrauma of ear, which is caused due to a change in air pressure.
Because of this, aircraft are pressurised to simulate a lower altitude inside the cabin. India's Ministry of Civil Aviation has asked for a report ASAP from its investigatory arm, Al Jazeera reports. "There was no announcement by the crew and nobody knew what to do".
The airline said a team accompanied the five most critically affected passengers to the hospital.
Preliminary information also revealed that the Boeing 737 aircraft had climbed upto 10,000 feet and was close to Surat when pilots made a decision to return to Mumbai after the incident on Thursday.
In a statement to Business Insider, Jet Airways said, "5 guests who were referred to a hospital for additional medical check-up accompanied by the Jet Airways' Care team have since been released, post medical examination". It added: "All guests were deplaned safely and taken to the terminal".