An American man acted "negligently" before the emergency grounding of a transatlantic flight in a row started over crackers, a prosecutor said.

An American man accused of endangering an aircraft has said his treatment was unwarranted.

Tense and adrenalin-filled passengers moved children away from an American man accused of endangering an aircraft, witnesses told his trial in the North today.

An American man accused of endangering the safety of a transatlantic flight chased a flight attendant up the aisle after she refused to serve him cheese and crackers, a court has heard.