A 50-year-old woman refused a bottle of wine on board a plane launched into a racist tirade against staff and claimed she was an "international criminal lawyer" who would take them to court.

In the video, uploaded to Twitter by a fellow passenger, the woman, who appears to be from either Britain or Ireland, is seen shouting expletive-laden threats at Air India staff.

The blonde, bare-footed woman yelled that she would "p--- all over" the flight attendants in court, and called a female staff member a "Indian f---ing money-grabbing b------", who she threatened to "turn inside out".

The passenger, who appeared to be flying in business class, also claimed to be a "leader of the f---ing boycott movement" and said she would arrange a boycott of Air India because they refused her a "wee bottle of wine".

The incident took place on an Air India flight from Mumbai to London Heathrow last Saturday.

Boasting about her alleged legal cases, the woman is seen shouting at a staff member who is believed to be one of the pilots.

In the video, she shouts: "'F--- off! I'm a f---ing international criminal lawyer and a barrister. You will be p***ed on in court!'

"I work for all you f---ing people...