This is the 14695th most frequent Korean word.
민용항공국은
"민용항공국은" means "Civil Aviation Bureau."
Here, '민용항공국은' is used as the subject of the sentence, referring to the Civil Aviation Bureau.
민용항공국은 항공 안전을 감독합니다.
The Civil Aviation Bureau supervises aviation safety.
In this sentence, '민용항공국은' again functions as the subject, emphasizing its role in policy making.
민용항공국은 새로운 규정을 발표했습니다.
The Civil Aviation Bureau announced new regulations.
Here, '민용항공국은' is used as the entity performing the action, showing intent and plan formulation.