[barefoot]

There are similar (but more basic) systems built into some retractable gear aircraft. They generally provide an audible alert if the plane appears about to land but the gear is still up.

Pilots still land gear up, even with the alarm sounding. There is (or at least was) even a public (YouTube) video of this happening from a passenger filming.

Landing a plane is not difficult (source: I’m a pilot) but there’s a lot going on. This is clearly a UI/UX issue but innovation is relatively slow in the certified market.

[Piskvorrr]

Just search for "gear up landing"; this situation is...plentiful. https://www.youtube.com/watch?v=2hMn7ZweF6s

And yeah, before anyone says "but the beeping!" - yup, people are fallible. I've managed to scratch a car in a similar but far cheaper setting: start up...set navigation...go into reverse...think about the traffic announcement...think about garage keys...hear parking sensors beeping...beeping intensifies...CRUNCH...facepalm, dammit I was supposed to brake! In my case, this was a low-speed, low-energy collision, so just a tiny scratch on plastic, but I can definitely see how a minor distraction can turn into a major accident.

[kitteh]

The anecdote I've heard is that the gear up / low throttle alarm is usually the component to break and people fail to replace it, which leads to gear ups.