20 crashes,

At out current level of airline safety, how many flights would we need to fly to get to 20 crashes.

We must be close to around 1 crash a year?

So 20 years... In 1 year we have around 20 million flights... 400 million flights to get to 20 crashes.

I'm gonna assume advanced aliens are at least an order of magnitude better. There isn't a billion of these things in the sky..

So yeah, there safety level for such an advanced thing seems a bit shit.

I just don't believe they would crash this often to even have 10-20 crafts.

The whole premise seems absurd.