There are 3 Lockheed P-3A aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1963 and 2010.
N927AU
2010 Lockheed P-3A
Starke, FL
N922AU
1964 Lockheed P-3A
Hawthorne, FL
N920AU
1963 Lockheed P-3A
North Hollywood, CA