# N9RK: Koepp THORP T-18 MODEL 171, registration cancelled 1994-11-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 23, 1994
- Status when cancelled: Second triennial mailing, no response
- Airframe: [Koepp THORP T-18 MODEL 171](https://openairdocs.org/model/koepp-thorp-t-18-model-171) (registry code 8951087)
- Serial number: 540
- Type of aircraft: Fixed wing single engine
- Last registry action: October 6, 1984
- Mode S code: AC6BFB
- Owner when cancelled: [Koepp Robert L](https://openairdocs.org/faa-owner/KOEPP%20ROBERT%20L)
- Location: [Island Lake, IL](https://openairdocs.org/faa-place/IL/Island%20Lake)
- Owner type: Individual
- Owner's area on the map: 42.2783° N, 88.1955° W: Placed by OpenAirDocs at the center of ZIP code 60042, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9RK
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9RK
- Page: https://openairdocs.org/deregistered/N9RK-1994-11-23

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 Koepp THORP T-18 MODEL 171: https://openairdocs.org/model/koepp-thorp-t-18-model-171.md

## Other aircraft with N9RK

- [Registered now](https://openairdocs.org/aircraft/N9RK): Kopczynski Kevin E VANS RV-6, S/N 001, built 2003

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