# N7LN: 1970 Thorp T-18, registration cancelled 2021-03-06

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 6, 2021
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Thorp T-18](https://openairdocs.org/model/thorp-t-18) (registry code 89510TP)
- Engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506)
- Data sheets: [TCDS E-229](https://openairdocs.org/tcds/E-229) (OpenAirDocs)
- Serial number: 176
- Year built: 1970
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: December 5, 1975
- Certificate issued: November 10, 2014
- Last registry action: September 26, 2017
- Mode S code: A950E3
- Owner when cancelled: [Brandiger Katherine M](https://openairdocs.org/faa-owner/BRANDIGER%20KATHERINE%20M)
- Location: [Rapid City, SD](https://openairdocs.org/faa-place/SD/Rapid%20City)
- Owner type: Individual
- Owner's area on the map: 44.0320° N, 103.4154° W: Placed by OpenAirDocs at the center of ZIP code 57702, within about 10 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N7LN
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7LN
- Page: https://openairdocs.org/deregistered/N7LN-2021-03-06

From the FAA registry file of November 3, 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 Thorp T-18: https://openairdocs.org/model/thorp-t-18.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 DEN77DQA06](https://openairdocs.org/ntsb/DEN77DQA06), Dec 1, 1976: Thorp T18 (N7LN), Santa Fe, NM, substantial damage

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