Dig in and discover how airplanes really work. This comprehensive book covers all system types and is ideal if you're in the aviation mechanic or pilot programs - or you simply want to become well versed in aircraft systems as they relate to aviation systems training.
Loads of good information (and many diagrams--which are super useful if you get lost in his explanations like I sometimes did), but there are a few spots with errors. I was glad to have these pointed out in our systems class.
I've read Aircraft Systems for Pilots and I can tell you it's a comprehensive read. I would have liked to read a bit more about aircraft sealants only because that was my specialisation in maintenance back in the day.
Goes way farther in depth than a pilot really needs if they're not doing their own maintenance, but I found it to be thorough, very easy to understand, and full of detailed diagrams. This is the kind of book you keep around for reference.