There are 26 Piper PA-31 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 1968 and 1978.
N27712
1978 Piper PA-31
West Palm Beach, FL
N325SG
1978 Piper PA-31
Key Largo, FL
N406DZ
1978 Piper PA-31
Kalispell, MT
N737WK
1978 Piper PA-31
Carson City, NV
N780GC
1978 Piper PA-31
Carolina, PR
N212RA
1977 Piper PA-31
Miami Lakes, FL
N262AS
1977 Piper PA-31
Ann Arbor, MI
N6190U
1974 Piper PA-31
Bryce, UT
N144AS
1973 Piper PA-31
Casper, WY
N6AR
1973 Piper PA-31
Wilmington, DE
N138R
1972 Piper PA-31
Wenatchee, WA
N250MD
1971 Piper PA-31
Carson City, NV
N16SC
1970 Piper PA-31
Pahrump, NV
N54CL
1970 Piper PA-31
Naperville, IL
N9680T
1970 Piper PA-31
Fairbanks, AK
N300WA
1968 Piper PA-31
Granbury, TX
N533YA
1968 Piper PA-31
Whitehouse, OH
N9167Y
1968 Piper PA-31
Gig Harbor, WA
N9218Y
1968 Piper PA-31
Gallipolis, OH
N131PJ
Piper PA-31
Drums, PA
N28DV
Piper PA-31
Gladstone, MO
N317SF
Piper PA-31
Magnolia, DE
N39HA
Piper PA-31
Somerset, WI
N449TA
Piper PA-31
Casper, WY
N703XP
Piper PA-31
Oklahoma City, OK
N879CS
Piper PA-31
Fort Lauderdale, FL