Vantaggi
The experience - they usually use the latest in software and manufacturing tools. There are usually excellent training resources available, even funded. The mostly cubicle office spaces, facilities and cafeteria are usually clean and decent. One can visit the major assembly and flightline areas without too much trouble to observe aircraft being built. There are some good folks in senior or knowledge positions, but you may have to discover who they are for yourself. I made some good friends there - most of my coworkers were pretty decent folks.
Svantaggi
Typical large company politics, cronyism and nepotism. Corporate guidelines for ethical conduct appear to exist for legal reasons only - you're pretty much at the mercy of your supervisor. Sometimes you get lucky, but if you're not, you may have no choice but to quit. When I was there I saw some peers to do virtually nothing yet maintain their job or even advance while honest worker bees got meaningless trinkets and toys for their efforts. It was often a training ground for junior level employees who'd quit once they had enough experience to go elsewhere. One could be transferred to locations, distant commutes from their residence without consideration. You might wind up training your replacement - in Russia.