What happened
On December 31, 2012, a Boeing 777-222, operating as N206UA, experienced a failure of the No. 1 (left) engine while passing through flight level 250. During the flight, the crew received an “ENG FAIL” message on the Engine Indicating and Crew Alerting System (EICAS).
The flight crew declared an emergency and initiated a return to Incheon International Airport in Seoul, South Korea. The aircraft completed an uneventful landing at the airport with 0 fatalities and no injuries reported.
The investigation
Following the landing, a post-flight inspection was conducted. This inspection revealed the presence of metal fragments within the No. 1 engine chip detector.