# N4485: 1944 North American SNJ-6

- Status: Valid registration
- Airframe: [North American SNJ-6](https://openairdocs.org/model/north-american-snj-6) (registry code 6400422, 2 seats)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 44-81646-1
- Year built: 1944
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, exhibition, racing
- Airworthiness date: August 21, 2003
- Certificate issued: May 21, 2002
- Expires: May 31, 2027
- Mode S code: A56B5C
- Registered owners: [Dwelle Thomas A](https://openairdocs.org/faa-owner/DWELLE%20THOMAS%20A), [Dwelle Kenneth H](https://openairdocs.org/faa-owner/DWELLE%20KENNETH%20H), [Dwelle Thomas W](https://openairdocs.org/faa-owner/DWELLE%20THOMAS%20W)
- Location: [Auburn, CA](https://openairdocs.org/faa-place/CA/Auburn)
- Owner type: Co-owned
- Owner's area on the map: 38.9915° N, 121.1035° W: Placed by OpenAirDocs at the center of ZIP code 95602, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4485
- Page: https://openairdocs.org/aircraft/N4485

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney R1340 model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (North American SNJ-6)

None in force.

### Matched by engine (Pratt & Whitney R1340 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4485.

## FAA accident and incident reports

None matched to N4485.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N4485

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4485 before.

- [Cancelled 1930-03-20](https://openairdocs.org/deregistered/N4485-1930-03-20): Irwin IRWIN C-C-1, S/N 111. Owner: [Texas And Pacific Coal And Oil Co](https://openairdocs.org/faa-owner/TEXAS%20AND%20PACIFIC%20COAL%20AND%20OIL%20CO)

## Related

- Other North American SNJ-6 aircraft: https://openairdocs.org/model/north-american-snj-6/aircraft.md
- The Pratt & Whitney R1340 series engine: https://openairdocs.org/engine/pratt-whitney-r1340-series.md

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