"Which of the displayed aircraft, if any, is a collision risk to me on my track WAD - TWRN? (This is just a snapshot from the EFB provider supplied data, without my conspicuity device connected. Just assume they are ADS-B IN symbols in green.) You have the luxury of looking at a much bigger and stable display on your computer monitor."
Why isn't that interface also showing automobile traffic and Zillow prices?
It can project expected path but not filter for altitude? Sucky software sucks.
Per the mid-air followup, the alarms didn't go off because there was no pressure altitude to one ADSB-Out. Why was there no continuous alarm in that plane indicating a critical failure? Why no horizontal separation alert on either plane? Why not also use GPS geodetic altitude as well as pressure altitude? Sucky software and sucky specification sucks.