Visible crew/equipment: Camera equipment is visible in the glass of the plane as the shot pulls in on the cockpit. It is fast but noticeable.
Episode #1.9 - S1-E9
Visible crew/equipment: When Ae-sin is speaking to Eugene in his office, and she is sitting at his desk, right after she says "Don't get me wrong. I'm actually here for a reason", she is shown looking down at her lap. When this happens, the reflection of the boom mic can be seen in one of the photographs on the table behind her. (00:46:24)