In keeping with the instrumentflying maxim that you must trust your instruments rather than going by your seatofthepants sense, flight crews are told to trust and follow those TCASRA warnings, immediately. 유나이티드 항공기는 지금 당장 하강하라는 지시를 받았고 승무원들은 그렇게 했습니다. How far is a foot descent?