More than 30 passengers on an airplane - flying from Mumbai to Jaipur - were exposed to blood pressure in their noses and ears after the pilots had forgotten to press the cabin pressure button.
The airplane which belonged to Jet Airways returned back shortly after the departure.
The 9W 697 flight - a Boeing 737 aircraft - had 166 passengers and five crew on board. 30 of the customers suffered injuries, of which five were admitted to the Dr Balabhai Nanavati Hospital in Mumbai.
The rest were given treatment at the airport hospital.
Lalit Gupta, General Director of Civil Aviation Authority of India, told the Hindustan Times that the flight crew forgot to press the cabin pressure adjusting button.