# N304GS: 1953 Canadian Car & Foundry HARVARD MK IV

- Status: Valid registration
- Airframe: [Canadian Car & Foundry HARVARD MK IV](https://openairdocs.org/model/canadian-car-foundry-harvard-mk-iv) (registry code 1922828, 2 seats)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 20328
- Year built: 1953
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, exhibition
- Airworthiness date: November 5, 1987
- Certificate issued: September 15, 2016
- Expires: September 30, 2029
- Mode S code: A32ED5
- Registered owner: [Cascade Airways LLC](https://openairdocs.org/faa-owner/CASCADE%20AIRWAYS%20LLC)
- Location: [Corvallis, OR](https://openairdocs.org/faa-place/OR/Corvallis)
- Owner type: LLC
- Owner's area on the map: 44.5699° N, 123.2783° W: Placed by OpenAirDocs: center of Corvallis, OR, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=304GS
- Page: https://openairdocs.org/aircraft/N304GS

From the FAA registry file of October 22, 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 (Canadian Car & Foundry HARVARD MK IV)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N304GS.

## FAA accident and incident reports

None matched to N304GS.

## 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.

## Related

- Other Canadian Car & Foundry HARVARD MK IV aircraft: https://openairdocs.org/model/canadian-car-foundry-harvard-mk-iv/aircraft.md
- The Pratt & Whitney R1340 series engine: https://openairdocs.org/engine/pratt-whitney-r1340-series.md

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