The U.S. aircraft register, updated daily · Carbon Free Flight by 2050
Models · Porterfield · Piston singles · data as of October 2, 2026

Porterfield CP-50

8 on the U.S. register. Built from 1939 to 1948; half of them date from 1939 or earlier. Washington has the most (1). 25% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are never named here.

About the CP-50 from the FAA's model table

Type
Fixed-wing, single engine · Piston singles
Power
Piston (reciprocating), 1 engine
Common engines
Cont Motor A50 Series (4), Cont Motor A&C65 Series (1), Ama/Expr Unknown Eng (1)
Seats
2
Cruise speed
about 76 mph
Maker on the register
Porterfield
Registered
earliest certificate April 21, 1997; newest June 4, 2022

Where they are owner's state

Washington1Oregon1Missouri1Michigan1Iowa1Delaware1California1Arkansas1

Who owns them registrant type

Individual5 (62%)LLC1 (12%)Corporation1 (12%)Co-owned1 (12%)

Versions as the FAA records them · click one to list only those aircraft

VersionRegisteredBuiltShare
CP-5081939 to 1948100.0%

When they were built by decade · 2 with no year on file

012233193031940

Registrations by year certificates issued since 2010, including changes of owner · 2026 is the year so far

00122120142201512016120181202012022

Registration status

Valid8 (100%)

Airworthiness certificate class

Standard6 (75%)None on file2 (25%)

Biggest operators companies, schools and clubs

Western Antique Aeroplane & Automobile Museum1Shannon Aviation LLC1

Fleet pages: Western Antique Aeroplane & Automobile Museum

Accident history NTSB

Each aircraft's own page already shows its NTSB accident and incident record. The model-wide record (accidents per year, fatal and non-fatal, against the number registered) is being added; it will appear here.

Questions people ask answers refresh every morning

How many Porterfield CP-50 aircraft are registered in the U.S.?

8 as of October 2, 2026, counting 1 version the FAA records separately.

Which state has the most Porterfield CP-50s?

Washington, with 1.

Who owns the Porterfield CP-50?

25% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are never named on this site.

Aircraft newest certificates first · 8

Tail no.Maker and modelOwner and baseCertificateRegisteredStatus
N25422 Porterfield
CP-50
Individual owner
Washington
None on file 2022-06-04 Valid
N25495 Porterfield
CP-50
Shannon Aviation LLC
Drexel, Missouri
Standard 2020-02-25 Valid
N21994 Porterfield
CP-50
Individual owner
Iowa
Standard 2018-02-12 Valid
N21987 Porterfield
CP-50
Co-owned owner
California
Standard 2016-07-19 Valid
N25437 Porterfield
CP-50
Individual owner
Arkansas
None on file 2015-12-22 Valid
N21973 Porterfield
CP-50
Western Antique Aeroplane & Automobile Museum
Hood River, Oregon
Standard 2015-06-02 Valid
N25436 Porterfield
CP-50
Individual owner
Michigan
Standard 2014-02-24 Valid
N25439 Porterfield
CP-50
Individual owner
Delaware
Standard 1997-04-21 Valid