# N711RF: 1978 Fonk THORP T-18, registration cancelled 2018-05-03

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 3, 2018
- Status when cancelled: Sale reported, canceled
- Airframe: [Fonk THORP T-18](https://openairdocs.org/model/fonk-thorp-t-18) (registry code 8951083)
- Engine: [Lycoming IO-320 series](https://openairdocs.org/engine/lycoming-io-320-series) (registry code 41509)
- Data sheets: [TCDS 1E12](https://openairdocs.org/tcds/1E12) (OpenAirDocs)
- Serial number: 514
- Year built: 1978
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: June 25, 1980
- Last registry action: April 18, 2016
- Mode S code: A98141
- Location: [Tucson, AZ](https://openairdocs.org/faa-place/AZ/Tucson)
- Owner type: Individual
- Owner's area on the map: 32.2490° N, 111.0613° W: Placed by OpenAirDocs at the center of ZIP code 85745, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N711RF
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=711RF
- Page: https://openairdocs.org/deregistered/N711RF-2018-05-03

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 Fonk THORP T-18: https://openairdocs.org/model/fonk-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 CHI78DEE71](https://openairdocs.org/ntsb/CHI78DEE71), Sep 1, 1978: Thorp T-18 (N711RF), Schaumburg, IL, substantial damage

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