From what I gather, TCAS is tricky at an airport environment as there are "close calls" somewhat routinely. Resolution advisories are definitely inhibited. Some

From what I gather, TCAS is tricky at an airport environment as there are "close calls" somewhat routinely. Resolution advisories are definitely inhibited. Some more info here: https://skybrary.aero/articles/tcas-ii-activation https://skybrary.aero/articles/tcas-ii-activation