The former vice president of Korean Air appeared before prosecutors Wednesday to face questioning over an incident dubbed 'nut rage' as prosecutors are considering seeking an arrest warrant for the daughter of the Korean Air chairman.
   
"I am sorry," Cho Hyun-ah said with her head drooping before entering the Seoul Western Prosecutors' Office.
   
Still, she did not answer reporters' questions whether she had used abusive language and physically assaulted the chief purser.

The prosecution office said it plans to grill Cho whether she had pushed the flight attendant, based on the testimony of passengers and other flight attendants who were at the scene.
   
Cho had flatly denied the assault allegations.
   
The development came amid a national uproar over her conduct aboard the flight at New York's JFK Airport.
   
She ordered the chief purser of the plane that was already on the taxiway to get off because she was displeased about the way she was served her macadamia nuts -- in an unopened pack instead of on a plate. She chastised the crew for not following the service manual for first-class passengers.
   
The flight, with some 250 other passengers aboard, had to return to the gate to deplane the purser, causing an 11-minute delay in its arrival at Incheon, Seoul's main gateway.
   
She has since quit all her executive posts, though criticism has not died down.
   
Prosecutors said they are considering seeking an arrest warrant for the former vice president.
   
Cho, if also found to have coerced the chief purser and the flight attendant to provide false testimony during the government questioning, is likely to be detained, they added.
   
The transportation ministry said Tuesday they have filed a formal complaint with the prosecution against the younger Cho and will take disciplinary measures against the carrier.
   
The incident has angered South Koreans over the tyrannical behavior of the owner family of a family-run conglomerate, or chaebol.
   
The Cho family wields enormous influence in the company, though it has a 10 percent stake in Korean Air, which is part of Hanjin Group, one of the top 10 chaebol in South Korea. (Yonhap)