pitot tubes. again.
How about requiring a pitot tube to have a light sensor in it, and pitot covers to have blackout lining. Then if the light sensor isn't seeing light, it'll raise an alert on engine start. It's mad that a $100M aircraft can be incapacitated by not having a bit of orange plastic flapping in the wind. And to counter night-time, I'm sure the aircraft computer can figure out whether it's day or light, adjust accordingly, and also I'd expect the apron to be illuminated. I'm not suggesting existing fleets be retrofitted as the wiring cost would be huge, but for certification going forward..