Northwestern PORTERFIELD 35
5 on the U.S. register across 2 versions the FAA records separately. Built from 1935 to 1954; half of them date from 1950 or earlier. Texas has the most (2). 0% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
About the PORTERFIELD 35 from the FAA's model table
- Type
- Fixed-wing, single engine · Piston singles
- Power
- Piston (reciprocating), 1 engine
- Common engines
- Leblond 70 Series (2), Cont Motor A&C65 Series (1), Ama/Expr Unknown Eng (1)
- Fuel
- 100LL avgas
- Seats
- 2
- Cruise speed
- about 76 mph
- Built of
- steel tube, wood and fabric · A steel-tube fuselage and wooden wings under fabric.
- Maker on the register
- Northwestern
- Registered
- earliest certificate November 2, 1981; newest October 22, 2024
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| Individual | 5 | 100% |
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| PORTERFIELD 35-70 | 3 | 1935 to 1950 | 60.0% |
| PORTERFIELD 35 | 2 | 1954 | 40.0% |
When they were built by decade · 2 with no year on file
Airworthiness certificate class
By airworthiness certificate, as a table
| aircraft | share | |
|---|---|---|
| Standard | 4 | 80% |
| None on file | 1 | 20% |
Biggest operators companies, schools and clubs
No data
Accident history NTSB records · 0 cases since 1982, 0 fatal
No NTSB accident or incident records match this family's versions. Each aircraft's own page also shows its record. How models compare: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Northwestern PORTERFIELD 35 aircraft are registered in the U.S.?
5 as of November 9, 2026, counting 2 versions the FAA records separately.
Which state has the most Northwestern PORTERFIELD 35s?
Texas, with 2.
Who owns the Northwestern PORTERFIELD 35?
0% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are not named on this site at this time.
When were the Northwestern PORTERFIELD 35s on the register built?
Between 1935 and 1954; half of them in 1950 or earlier.
What is the Northwestern PORTERFIELD 35 made of?
A welded steel-tube fuselage and wooden wings, all covered in fabric: the construction of the 1930s and 1940s, which makes wood rot and fabric age the inspection items. A steel-tube fuselage and wooden wings under fabric. The FAA's type certificate data sheet is the authority for any one model.
What the FAA has certified, ordered and been told about the Northwestern PORTERFIELD 35 the component layer
A welded steel-tube fuselage and wooden wings, all covered in fabric: the construction of the 1930s and 1940s, which makes wood rot and fabric age the inspection items. A steel-tube fuselage and wooden wings under fabric. The design is held under 3 type certificates. No FAA order in the current files names this model. 9 approved modifications exist for it, the most by Swift Fuels LLC.
Approved replacement parts 2 parts manufacturer approvals
Parts a company other than the maker may make for this design and sell as FAA-approved. The companies holding the most:
Most often: fuel quantity (1), fuel placard (1).
Approved modifications 9 supplemental type certificates
Changes the FAA has approved for this design, from new avionics and engines to floats and parachutes. The companies holding the most:
Latest
Certificates and bulletins
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how the PORTERFIELD 35 links to the rest of the register
- Northwestern 11 aircraft on the register
- Northwestern PORTERFIELD 35-70 3 registered
- Northwestern PORTERFIELD 35 2 registered
- Built of steel tube, wood and fabric · A steel-tube fuselage and wooden wings under fabric.
- Leblond 70 series 2 of these aircraft · 70 hp
- Continental A65 / C65 series 1 of these aircraft · 65 hp
- Texas 2 of these aircraft
- Oklahoma 1 of these aircraft
- New York 1 of these aircraft
- California 1 of these aircraft
- NTSB accidents and incidents involving the PORTERFIELD 35 0 cases since 1982 · 0 fatal
- Approved modifications for the PORTERFIELD 35 9 supplemental type certificates
The whole map of how records connect · these connections as data: /graph/model/northwestern/porterfield-35.json.
Aircraft newest certificates first · 5
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N25591 | Northwestern PORTERFIELD 35 |
Individual owner Texas |
None on file | 2024-10-22 | ValidFAA registration status code V: Valid registration. All codes |
| N14475 | Northwestern PORTERFIELD 35-70 |
Individual owner New York |
Standard | 2019-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N15457 | Northwestern PORTERFIELD 35-70 |
Individual owner California |
Standard | 2016-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N34719 | Northwestern PORTERFIELD 35 |
Individual owner Oklahoma |
Standard | 2007-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N15444 | Northwestern PORTERFIELD 35-70 |
Individual owner Texas |
Standard | 1981-11-02 | ValidFAA registration status code V: Valid registration. All codes |