immediately he pointed out that main issue might be that left seat pilot PF Mr.Lee,Kang Kook was senior to instructor doing PM duties from right seat....by senior I mean they both are graduates from Korea Aerospace University and PF Mr.Lee was senior class in University to instructor...
I wondered if this might be the case but having no facts upon which to speculate I said nothing. But if this is true it might go a long way towards explaining why the incident occurred as it did, assuming no mechanical problems.
In CRM theory the training captain should have been superior to the pilot in training but culturally he was not, creating a psychological conundrum when things went haywire.