Or teach them to learn Fly and Feather Fall with future PCs.
Actually, one thing you could do is have the crash result in a huge amount of damage (save for half). PCs are flung all over the place and the ones still conscious have mere moments to save their PC allies (who might be a hundred feet or more away). Alternatively, you could throw out the stupid idea of the module designer (who apparently never thought that PCs would want to survive a falling castle) and give the PCs their own flying castle.
Just because it is written down in a module does not mean that it is a good idea to use what is written.
Actually, one thing you could do is have the crash result in a huge amount of damage (save for half). PCs are flung all over the place and the ones still conscious have mere moments to save their PC allies (who might be a hundred feet or more away). Alternatively, you could throw out the stupid idea of the module designer (who apparently never thought that PCs would want to survive a falling castle) and give the PCs their own flying castle.
Just because it is written down in a module does not mean that it is a good idea to use what is written.