# Northwestern PORTERFIELD 35

- Type: Aircraft model (FAA registry)
- Registry code: 6480132
- Manufacturer (registry): NORTHWESTERN
- Model: PORTERFIELD 35
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 2
- Weight class: Up to 12,499 lb
- Cruise speed: 76 mph
- Certification: Type certificated
- Data sheet: [TCDS ATC 567](https://openairdocs.org/tcds/ATC%20567) (OpenAirDocs)
- Holder: Rankin Joe
- Registered aircraft: 2
- Page: https://openairdocs.org/model/northwestern-porterfield-35

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (2)

- [N25591](https://openairdocs.org/aircraft/N25591): [Casey Joseph](https://openairdocs.org/faa-owner/CASEY%20JOSEPH), [Lufkin, TX](https://openairdocs.org/faa-place/TX/Lufkin), S/N 691
- [N34719](https://openairdocs.org/aircraft/N34719): [Bryson Terry W](https://openairdocs.org/faa-owner/BRYSON%20TERRY%20W), [Stillwater, OK](https://openairdocs.org/faa-place/OK/Stillwater), built 1954, S/N 885

## NTSB investigations

None matched to aircraft with this model.

## FAA accident and incident reports

None matched to aircraft with this model.

## STCs that may be installed (OpenAirDocs) (2)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SA01734SE](https://openairdocs.org/stc/SA01734SE): Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts. Andrew D. Humphrey
- [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric. Aviation Products Systems Inc

## PMA parts (OpenAirDocs) (6)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this model on its data sheet, so check the FAA record before relying on it. Newest first.

- [73-CFG-R](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183391044820260806152426.0001): Fuel Quantity Indication Placard. Swift Fuels, LLC · PMA PQ04423CE · Modification part · Jul 20, 2026
- [S1069](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141989316920260806152333.0001): 100R Fuel Placard. Swift Fuels, LLC · PMA PQ04423CE · Modification part · Jul 20, 2026
- [V674UL94](https://drs.faa.gov/browse/excelExternalWindow/E1C1EF6CEE5DC2EE862585990051C803.0001): UL94 Fuel Placard. Swift Fuels, LLC · PMA PQ04423CE · Modification part · Jun 7, 2020
- [Model 600 WP](https://drs.faa.gov/browse/excelExternalWindow/5682F8155CD6FB10852570490054D746.0001): Air/Oil Separator. M-20 Oil Separators LLC · Modification part · May 12, 2003
- [SS-1001](https://drs.faa.gov/browse/excelExternalWindow/C7E32203B0D0EC7E8525704C00570B73.0001): Slick START TM Installation. Slick Aircraft Products, Division of Unison Ind · Modification part · Dec 2, 1997
- [K-1001](https://drs.faa.gov/browse/excelExternalWindow/79670B8722A2299A8525704C00516146.0001): Slick START TM Installation. Slick Aircraft Products, Division of Unison Ind · Modification part · Dec 2, 1997

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