Dozens of passengers suffered ear pain and nose bleeds after crew on a Boeing 737 flight from Mumbai, India, reportedly forgot to maintain cabin pressure.
The Jet Airways flight with 166 passengers and five crew members was climbing towards at an altitude of 11,000ft when pressure began to drop.
The flight heading to Jaipur, Rajastan state, was forced to returned to a Mumbai airport, with 30 passengers needing medical assistance, according to the Daily Mail.
Video footage shot by one of the passengers shows the moment when the oxygen masks were deployed to compensate the cabin pressure drop.