2018 seems no easier for United Airlines.
Via the WaPo:
United Airlines passengers found themselves in a fetid situation when their Chicago-to-Hong Kong flight made an unscheduled landing in Alaska after a man had smeared feces all over some of the plane’s bathrooms, airport officials said.
United Flight 895 was diverted to Anchorage on Thursday night, according to CBS affiliate KTVA, and police officials at Ted Stevens International Airport said the landing was due to a “passenger smearing feces everywhere.”