Cho was accused of forcing the chief cabin crew member off a December 5 New York-Seoul flight and of compelling the taxiing plane to return to the gate after she took exception to being served macadamia nuts she had not asked for -- and in a bag, not a bowl.

A government investigation found that she had screamed and hurled abuse at a flight attendant and the chief purser, Park Chang-Jin.

An arrest warrant is also being sought for an unidentified company executive on charges of destroying evidence from the incident.

A court will hold a hearing early next week to review the warrant application.

Cho has insisted that she did not physically assault the chief purser, but prosecutors said she had pushed the flight attendant, based on the testimony of passengers and other flight attendants.

Park has claimed that Cho pushed him into the cockpit door and jabbed him with a service manual.

Cho -- one of three children of Korean Air boss Cho Yang-Ho, the patriarch of business conglomerate Hanjin Group -- has publicly apologised and resigned from all her posts in the organisation.

Prosecutors are also investigating whether KAL officials coerced cabin crew to give false testimony to government inspectors to protect Cho.

On Wednesday investigators raided the office of a transportation ministry official who is suspected of leaking some details of the ministry's investigation.

The ministry has vowed to sanction the airline with a flight ban, most likely on the New York-Seoul route, that could last for up to a month, or with fines of up to $2 million. (AFP)