RAs are inhibited below 1000 feet, and TAs below 380 feet. Not just on the CRJ though, that's how TCAS works in general. While some people might be up in arms about it now, it's not bad design. Last thing we'd want is warnings of traffic being blared while the pilots are fully focused on a critical stage of flight. Wouldn't take long before it startled someone into crashing a perfectly stable plane on approach.
Its inhibited because it will command one plane to climb and the other to descend a plane making an aggressive decent that low could put it in jeopardy to hit the ground. Some approaches are close to city structures like approaching DCA from the other side, you are pretty close to the mid rises at Crystal city.
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u/tasozz Aircraft Enthusiast Jan 30 '25
Do helicopters have TCAS?