# N77RU: 1977 Unertl EAA BIPLANE, registration cancelled 2018-02-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 23, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Unertl EAA BIPLANE](https://openairdocs.org/model/unertl-eaa-biplane) (registry code 3360305)
- 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: 1
- Year built: 1977
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 22, 1980
- Certificate issued: September 12, 1975
- Last registry action: June 20, 2012
- Mode S code: AA6838
- Owner when cancelled: [Unertl Ronald W](https://openairdocs.org/faa-owner/UNERTL%20RONALD%20W)
- Location: [Waupaca, WI](https://openairdocs.org/faa-place/WI/Waupaca)
- Owner type: Individual
- Owner's area on the map: 44.3224° N, 89.1315° W: Placed by OpenAirDocs at the center of ZIP code 54981, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N77RU
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=77RU
- Page: https://openairdocs.org/deregistered/N77RU-2018-02-23

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 Unertl EAA BIPLANE: https://openairdocs.org/model/unertl-eaa-biplane.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.