# N7670: 2006 Flight Design CTSW

- Status: Valid registration
- Airframe: [Flight Design CTSW](https://openairdocs.org/model/flight-design-ctsw) (registry code 0600001, 2 seats)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: 06-02-05
- Year built: 2006
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, operating light-sport, previously under 21.190
- Airworthiness date: June 13, 2022
- Certificate issued: January 21, 2022
- Expires: January 31, 2029
- Mode S code: AA5DE1
- Registered owner: [Spencer Douglas W](https://openairdocs.org/faa-owner/SPENCER%20DOUGLAS%20W)
- Location: [Sioux Falls, SD](https://openairdocs.org/faa-place/SD/Sioux%20Falls)
- Owner type: Individual
- Owner's area on the map: 43.6030° N, 96.7043° W: Placed by OpenAirDocs at the center of ZIP code 57104, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7670
- Page: https://openairdocs.org/aircraft/N7670

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 Rotax 912ULS model are included.

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

### Matched by airframe (Flight Design CTSW)

None in force.

### Matched by engine (Rotax 912ULS series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB GAA24WA226](https://openairdocs.org/ntsb/GAA24WA226), Jul 3, 2024: Flight Design Ctsw (N7670), Roseau, Dominica, substantial damage

## FAA accident and incident reports

None matched to N7670.

## 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 N7670

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N7670 before.

- [Cancelled 1972-06-15](https://openairdocs.org/deregistered/N7670-1972-06-15): Dehavilland DHC-6 TWIN OTTER, S/N 187. Exported to Papua New Guinea. Owner: [Commerce Reinsurance Co](https://openairdocs.org/faa-owner/COMMERCE%20REINSURANCE%20CO), [San Diego, CA](https://openairdocs.org/faa-place/CA/San%20Diego)

## Related

- Other Flight Design CTSW aircraft: https://openairdocs.org/model/flight-design-ctsw/aircraft.md
- The Rotax 912ULS series engine: https://openairdocs.org/engine/rotax-912uls-series.md

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