# N3715: 1969 Thorp T-18, registration cancelled 2012-01-11

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 11, 2012
- Status when cancelled: First renewal notice
- Airframe: [Thorp T-18](https://openairdocs.org/model/thorp-t-18) (registry code 89510S7)
- 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: 66
- Year built: 1969
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 10, 1980
- Certificate issued: August 25, 1967
- Last registry action: October 16, 2007
- Mode S code: A43A89
- Owner when cancelled: [Hammer Robert H](https://openairdocs.org/faa-owner/HAMMER%20ROBERT%20H)
- Location: [Kirkland, WA](https://openairdocs.org/faa-place/WA/Kirkland)
- Owner type: Individual
- Owner's area on the map: 47.6760° N, 122.1947° W: Placed by OpenAirDocs at the center of ZIP code 98033, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N3715
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3715
- Page: https://openairdocs.org/deregistered/N3715-2012-01-11

From the FAA registry file of October 29, 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 (2)

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 SEA07CA185](https://openairdocs.org/ntsb/SEA07CA185), Jun 26, 2007: Hammer Thorp T-18 (N3715), Everett, WA, substantial damage. Probable cause: Excessive airspeed during a return for landing which resulted in an overrun. An unlatched canopy, a proper touchdown point not attained and rough terrain were factors.
- [NTSB SEA70D0023](https://openairdocs.org/ntsb/SEA70D0023), Jul 1, 1969: Thorp T-18 (N3715), Puyallup, WA, substantial damage

## 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 20070626009959A](https://openairdocs.org/incident/20070626009959A), Jun 26, 2007: Amtr T18 (N3715), Everett, WA, Substantial damage. (-23) After take off from runway 34L at pae, aircraft reported an open canopy and declared an emergency. Aircraft attempted to land on runway 11 and bounced…

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