Collision Avoidance Technology
I’ve flown from Wycombe for decades, fixed wing and gliders. What I would say is that TCAS, PCAS, FLARM etc are great in lower traffic density areas, but can be distracting in an area like the west of Heathrow zone where there is a lot of traffic squeezed into cramped class G. I eventually turned it off in these areas (except in visibility minimums when there were only a few othe madmen out anyhow) because it is constantly alerting you or attracting your eye and attention when you’d be better off looking out of the window and flying the aeroplane.
I like technology and I like being safe. But you can’t remove all risk from aviation simply by adding another system. Think of the accidents that have happened because people were head down in the cockpit systems, when head up was what would have saved them.