London Heathrow

Blog

United Airlines Flight UA770 Emergency Diversion: What Happened?

Introduction The United Airlines Flight UA770 emergency diversion happened on May 27, 2025, while the flight was travelling from Barcelona, Spain, to Chicago, United States. Instead of continuing across the Atlantic to Chicago O’Hare International Airport, the aircraft declared an emergency and diverted to London Heathrow Airport. The incident attracted attention because the pilots used the emergency transponder code 7700.…