when aircraft crashes so does hogkeys

```
What steps will reproduce the problem?
1.start hogkeys
2.start sim
3.crash the plane

What is the expected output? What do you see instead?
expect hogkeys to not crash but it will throw an exception and crash

Please use labels and text to provide additional information.

```

Original issue reported on code.google.com by `whartsell` on 18 Feb 2013 at 4:56
