Cho Hyun-min a senior vice-president at Korean Air has been suspended while reports of her throwing water at an advertising executive are investigated further.
Ms Cho is the daughter of the airlines CEO denies throwing the water but confirmed she may have shoved the executive and apologised for the incident and called her behaviour "foolish and reckless".
She is the younger sister of Cho Hyun-ah - the airline heiress who infamously had an aircraft return to the gate after being unhappy that a member of the cabin crew had served her nuts in an inappropriate manner.
According to local media Ms Cho unhappy with answers given to her by the ad executive during a meeting in Seoul during March.
Korean Air has stated that it would take appropriate action once the police investigation was over.
