Hi,
Welcome. I would first type your aircraft model in your favorite search engine; I found free copies of “Aztec Service Manual” and “Piper Aztec Parts manuals free by download. The free manuals are usually older manuals that may not contain all the information in the newest manuals but they are a good place to start. The same holds true for the engine manuals.
If you can’t find what you want, Piper and Lycoming manuals can also be found on eBay.
If this plan doesn’t fulfill your needs you can buy electronic versions of Aztec manuals from a Aircraft Technical Publications (www.atp.com) or by email at sales@atp.com.
