This book reminded me somewhat of The Count of Monte Cristo. A man is imprisoned for a crime he didn't commit and he must overcome many obstacles to claim his rightful place. Airman might be a challenging read for some students, but I know several intermediate students who will be pulled along by a good story.
If you want to discuss this book in class, you can use my Elements and Events as a means to determining the important characters and situations in the book. Click here for a free download.