RWR or Radar Warning Receivers have been around for years in military aircraft.

IFF has software/hardware that goes well beyond SSR fitted to civilian aircraft. TCAS (or now, more correctly ACAS) uses the signal between aircraft to give guidance on collision avoidance.

Collision avoidance currently gives pilots co-ordinated advice to climb or descend to resolve the conflict, each being given the opposite advice i.e. one aircraft climb and the other, descend.

Pilots may 'consider this pretty much as IFF', but it's not. I won't go into the differences regarding why and how, as you can Google that as well as anyone, and it saves me impinging on areas that I shouldn't.

Back to the A380, this is not good news particularly for Rolls Royce, but it does show how seriously all parties view the problem. In my book, it should reassure the travelling public that their safety is regarded as of prime importance.

Best of luck to all the aircraft/engine manufacturers as incidents such as these are not much fun for anybody. Also, well done the crew!