A former manager at British Airways (BA) has claimed she was the victim of unfair dismissal, constructive dismissal and racial discrimination.
Millie Jhalli was demoted from her role as customer services duty manager after confronting a passenger, the Evening Standard reports.
She was downgraded to the post of senior customer service agent as a result of the incident.
According to the worker, she was racially abused by the passenger in Heathrow's Terminal 4 after she tried to calm her down.
The individual had become upset because her flight was overbooked.
Ms Jhalli said: "I was trying to pacify the customer when I was told that 'people like you are the lowest of the low' and 'you are dirt'. She then started imitating my name with an Indian accent."
She denies subsequently insulting the woman and is suing BA - which has been in the news recently as a result of industrial disputes with staff members.
The hearing remains ongoing.