Predictive windshear warning

[hans brinker]

Originally Posted by Check Airman

Yes. When there’s traffic the TCAS can’t see. It’s happened before.

Excuse me. You would ignore an RA?

Absolutely wrong. If you have to other traffic visually while you follow the RA great. But you always follow the RA (Exceptions: Terrain/stall warning)

[Check Airman]

Originally Posted by hans brinker

Excuse me. You would ignore an RA?

Absolutely wrong. If you have to other traffic visually while you follow the RA great. But you always follow the RA (Exceptions: Terrain/stall warning)

The crew in question would have had a midair collision, had they followed the TCAS.

Please don't get me wrong, I've always followed TCAS RA's, but not blindly so. Doing so would be akin to blindly following a FD.

[Uplinker]

But in IMC, or at night, or if the TCAS traffic is directly above, below, or behind you - i.e. you can't see it - you still must follow an RA, no? (unless GPWS etc).

Even if you think you CAN see the traffic; that might not be the aircraft the TCAS is avoiding.

Bit like PWS detecting windshear that you can't see.