It was resulted from the different usage of Korean language based on power, authority and seniority. For instance, a person in the lower position cannot directly criticize a person in the higher position and also has to follow the orders of one's superieors. Due to the ambiguous and indirect reply from a co-pilot, the caption could not make a right decision right away and differnt way of speaking in Korean language based on the position hindered the flow of communication at the emergency situation. Actually after that tragic accident, the Korean Airline prevented all the crews from speaking in Korean during flight in order to communicate freely regardless of the position. It is because the strong relationship between power and language usage can be much more found in Korean and English.
As far as the power of authority figures is concerned, "Milgram's experiment of Obedience" also demonstrates us the influence of hierarchical power. Having reduced power is associated with attentiveness to authority, constraint on freedom, and inhabitation of speech (Behavioral Study of Obedience). This clearly showed itself that low power individuals are aware of their lowly status and have a tough time standing up in the face of an authority figure. Therefore, this may cloud some people's thoughts and make the wrong decision even in spite of obvious misjudgement.
Furthermore, it tells how the influence of the authority figure can lead a person to make a misjudgment or engage in destructive behaviors even though he or she knows it is not right.
This case shows us that how power shaped discourse (language usage) and is reshaped by discourse based on the cultural difference. This phenomenon can be more often found in such a high context society like Korea.