What: jet2.com Boeing 737-300 en route from Manchester to Rome (and back)
When: Jul 24, 2012
Who: 1
Why: 11-year-old Liam Corcoran managed to fly to Rome on his own without a passport or a boarding pass, and his action has instigated a probe of procedures at Manchester airport.
Corcoran ran away from his mother, went through full security screening, and boarded the flight while mingling with a family and was discovered while en route. He discussed with other passengers how he was running away. It was other passengers who notified the crew who notified the Captain who called his worried family. He stayed on the plane for the return flight to Manchester, and was returned safely to his family.
A number of airport and Jet2 employees have been suspended as a result of the security breach. The breach has launched several high-level investigations.

United Airlines flight UA-31 had to divert and make an emergency landing at Heathrow Airport, England, on November 26th.
British Airways flight BA-277 had to return and make an emergency landing at Heathrow Airport, London, United Kingdom, on June 12th.