Like if you were mechanic for the airline and got message that we will be landing with missing door. And then traded stock of airline on that information.
Being in the crew of the plane might get more messy at least when done with airline. Boeing less so.
This is the part which I find really sticky. What about all of the non-Boeing employees who interface with the equipment for their job?
The pilot, flight attendants, air traffic control, EMTs, etc. They have no direction association with Boeing, yet you could make an argument it was part of their responsibilities.
On the other hand, if your employer gives you X-brand wrenches, which frequently fall apart in your hands during routine operation, that seems like actionable information on which you would be justified to act.
Like all laws it's about enforcement. They can say whatever they want we know "insider trading" is a natural human response to information. Unless they can prove it was insider trading it isn't.
Being in the crew of the plane might get more messy at least when done with airline. Boeing less so.