Narrative:

During initial beverage after takeoff; misconduct passenger using excessive offensive vulgar language; showing extremely offensive; aggressive; belligerent; unstable and abnormal behavior towards multiple working crew members. Passenger using excessive vulgar language while I served him multiple beverages. After double check with him if there is anything I can get for him; I politely move on to next customers. He suddenly [started] getting extremely angry; unstable and aggressive. He was yelling in multiple vulgar language about the coffee doesn't have the 'thing'. I explain to him that I can't understand; he start severe yelling loudly and aggressively with unstable emotion; offensive and belligerent using vulgar language. He lost control. My flying partner and myself advise him to calm down but he continue the abnormal aggressive behavior. We report to aft-purser and she told us [the] passenger have been very aggressive and verbal abusive using vulgar language towards her and other working flight attendants. That was even before we first meet him; and he was extremely unstable and showing abnormal behavior. The other flight attendant had already reported to the cockpit captain in regards and we were told to monitor his condition but not to response to his verbally abusive vulgar language and unstable abnormal behavior.

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Original NASA ASRS Text

Title: A Flight Attendant reported a verbally abusive and apparently emotional unstable passenger became belligerent and aggressive.

Narrative: During initial beverage after takeoff; misconduct Passenger using excessive offensive vulgar language; showing extremely offensive; aggressive; belligerent; unstable and abnormal behavior towards multiple working crew members. Passenger using excessive vulgar language while I served him multiple beverages. After double check with him if there is anything I can get for him; I politely move on to next customers. He suddenly [started] getting extremely angry; unstable and aggressive. He was yelling in multiple vulgar language about the coffee doesn't have the 'thing'. I explain to him that I can't understand; He start severe yelling loudly and aggressively with unstable emotion; offensive and belligerent using vulgar language. He lost control. My flying partner and myself advise him to calm down but he continue the abnormal aggressive behavior. We report to Aft-purser and she told us [the] passenger have been very aggressive and verbal abusive using vulgar language towards her and other working flight attendants. That was even before we first meet him; and he was extremely unstable and showing abnormal behavior. The other Flight Attendant had already reported to the cockpit captain in regards and we were told to monitor his condition but not to response to his verbally abusive vulgar language and unstable abnormal behavior.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.