# N812SS: Thompson Harrison C TKD BATHTUB, registration cancelled 1991-06-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 18, 1991
- Status when cancelled: Triennial form not returned
- Airframe: [Thompson Harrison C TKD BATHTUB](https://openairdocs.org/model/thompson-harrison-c-tkd-bathtub) (registry code 056133D)
- Serial number: 1
- Type of aircraft: Fixed wing single engine
- Certificate issued: May 31, 1983
- Last registry action: January 31, 1991
- Mode S code: AB126B
- Owner when cancelled: [Thompson Harrison C](https://openairdocs.org/faa-owner/THOMPSON%20HARRISON%20C)
- Location: [Alexandria, MN](https://openairdocs.org/faa-place/MN/Alexandria)
- Owner type: Individual
- Owner's area on the map: 45.8676° N, 95.3943° W: Placed by OpenAirDocs at the center of ZIP code 56308, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N812SS
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=812SS
- Page: https://openairdocs.org/deregistered/N812SS-1991-06-18

From the FAA registry file of October 31, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Thompson Harrison C TKD BATHTUB: https://openairdocs.org/model/thompson-harrison-c-tkd-bathtub.md

## 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 MKC89LA184](https://openairdocs.org/ntsb/MKC89LA184), Aug 21, 1989: Dormoy TKD Bathtub (N812SS), Carlisle, MN, substantial damage. Probable cause: FAILURE OF THE MIXTURE CONTROL CABLE AND INADEQUATE MAINTENANCE (REPAIR) BY THE PILOT. THE TERRAIN CONDITIONS WERE CONSIDERED TO BE CONTRIBUTING FACTORS.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19890821030829A](https://openairdocs.org/incident/19890821030829A), Aug 21, 1989: N812SS, Carlisle, MN, Substantial damage. Piano wire mixture control broke. Landed and reattached. Departed engine quit again same reason. Crashed on landing

## Other aircraft with N812SS

- [Cancelled 2018-10-23](https://openairdocs.org/deregistered/N812SS-2018-10-23): Viking Air DHC-6-400, S/N 939, built 2016. Exported to Canada. Owner: [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- [Cancelled 2018-06-11](https://openairdocs.org/deregistered/N812SS-2018-06-11): Viking DHC-6-400, S/N 897. N-number assigned, not yet registered

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