Check
How detailed does he want it? just the various parts labelled etc? or more technical?
Found these for now
Clicky
This one is particularly good
Clicky
This one gives a good overview of the various types of jet engine
Clicky
This one isn't too bad either
Clicky
Another
Clicky
Wikipedia site
Clicky
Let me know if these suffice or you want something more in depth
Rgds
Dean