Question about Apple AirPods Max

I haven't used the audio cable yet, but I tried it on my stereo system and it works. I think it will also work on the plane, but I don't want to give a guarantee. The headphones weigh about 380g, so they are not the lightest, but I find them very comfortable. The weight doesn't bother me at all and I really wear them for hours.
I hope I was able to help you a little...