Jet Airways flight 9W-697 had to return and make an emergency landing in Mumbai, India, on September 20th.
The Boeing 737-800 plane took off for Jaipur, India, but had to turn back after several passengers suffered nose bleeds and/or ear bleeds due to a sudden change in cabin pressure.
The plane landed back safely. Several passengers were checked by the medical teams at the airport and some were later taken to a hospital.

American Airlines flight AA-728 had to make an emergency landing at Heathrow Airport, United Kingdom, on January 7th.
LGW Luftfahrtgesellschaft Walter flight AB-8512 had to return and make an emergency landing at Berlin Tegel Airport, Tegel, Germany, on July 26th.
Air New Zealand flight NZ-30 had to return and make an emergency landing in Auckland, New Zealand, on December 6th.
Avior Airlines flight 9V-1226 had to divert and make an emergency landing in Port-au-Prince, Haiti, on May 11th.