American Airlines flight AA60 from Tokyo Narita to Dallas-Fort Worth diverted to Seattle on Wednesday after declaring a ‘level 3 security alert’ which the FAA defines as “life-threatening behavior.”
According to the FAA’s threat reporting Advisory Circular (AC No 90-103), level three alerts are used for,
Weapon displayed/used, credible terrorist threats, credible bomb threats, or actual use of bombs, sabotage of aircraft systems, credible threats of hijacking, and deadly hand-to-hand techniques such as choking or eye gouging
There was loud screaming in the cabin as well as “approximately 10 loud bangs” and three flight attendants were punched and kicked, however there were no injuries as of the internal report reviewed by View From The Wing. American Airlines spokesperson Derek Walls confirms that the on arrival in Seattle the plane “was met by federal officials who removed an unruly customer from the flight.”
American Airlines Boeing 787-9
The aircraft, a Boeing 787-9 registration N828AA with 63 passengers and 13 crew, spent about an hour and a half on the ground in Seattle before continuing on to Dallas. American’s spokesperson offered thanks to the “crew for their professionalism and our customers for their understanding.