Oppel, Kenneth. Skybreaker

Oppel, Kenneth. Skybreaker [Airborn #2]. EOS, 2006 [0-06-053227-0]
The book opens with Matt now a student at the Airship Academy where apprenticed on a ship with a crazy captain. Someone spies the mysterious Hyperion ghost ship and the captain takes the ship up beyond this ship's limit to capture it and its gold. As people are passing out from lack of oxygen, Matt takes the ship back down... a scandal to countermand a captain. When the story gets in the papers, Matt gets involved in a serious attempt to rescue the ship (which was made and flown by a Howard Hughes type character) and its contents. Of course there is someone else who wants the ship also. This 369 page book is a great adventure in this alternate reality where airships are still luxury flying liners. I hope there will be more.