Take a look at Post #128. It’s explained there that it had nothing to do with the iPad or the iOS or the update. They identified it as a database problem in the software supplied by the company who does this for American Airlines.
All they did was issue some files to replace the one part of the database that was causing the problem, and installed the files outside of that App, and the problem was solved and they were on their way.
The software company will obviously fix their database so that it will not be a problem anymore, but that might take a few days to a week or so before it’s finished and tested.
In the meantime, it’s no problem to American Airlines and it wasn’t an iPad problem.
Ahh yeah it was and still is an iPad problem. An update can shut down the unit if it glitches and if the unit isn't working properly then by FAA rules the planes can't fly.
Or are you claiming that iPad's are glitch proof?