All incidents concerned flights coming into London Heathrow . Charles de Gaulle , Azerbaijan flight turned around after only 11 minutes with issue . Passenger on Mumbai-London flight says 'engine was leaking ' and plane diverted to Istanbul , Turkey . Person taken ill on UK-bound flight from Angola and plane lands at Paris Baku .
All incidents concerned flights coming into London Heathrow . Baku , Azerbaijan flight turned around after only 11 minutes with issue . Passenger on Mumbai-London flight says 'engine was leaking ' and plane diverted to Istanbul , Turkey . Person taken ill on UK-bound flight from Angola and plane lands at Paris Charles de Gaulle .