Have You Considered the Law Side?
I am your age and a currently furloughed major airline pilot. I have also considered changing careers -- to law! I was accepted into law school for the fall, but have opted not to attend for fear of trading one ragged career for another.
Having said that, I have done plenty of research and what I could do to combine the two interests of aviation and law. Have you considered practicing aviation law or space law? There are some very good LL.M. programs about -- Ole Miss, DePaul in the U.S.; Leiden and McGill abroad. I would think these programs would be particularly enlightening if you didn't get a lot of international law experience as part of your J.D.
There is always plenty of opportunity for bankruptcy and M&A lawyers in aviation as well.
You can practice law and fly airplanes on the side, which seems like a very reasonable alternative to setting law completely aside for an interest that you've only just begun to explore.