# N4441F: 1983 Borgert Mark TERATORN TIERRA II, registration cancelled 2013-06-11

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 11, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Borgert Mark TERATORN TIERRA II](https://openairdocs.org/model/borgert-mark-teratorn-tierra-ii) (registry code 05675CV)
- Engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050)
- Serial number: 1
- Year built: 1983
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 3, 1984
- Certificate issued: October 31, 1987
- Last registry action: June 5, 2000
- Mode S code: A55BFA
- Owner when cancelled: [Christensen Andrew L](https://openairdocs.org/faa-owner/CHRISTENSEN%20ANDREW%20L)
- Location: [Wilton, CA](https://openairdocs.org/faa-place/CA/Wilton)
- Owner type: Individual
- Owner's area on the map: 38.3985° N, 121.2195° W: Placed by OpenAirDocs at the center of ZIP code 95693, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4441F
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4441F
- Page: https://openairdocs.org/deregistered/N4441F-2013-06-11

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 Borgert Mark TERATORN TIERRA II: https://openairdocs.org/model/borgert-mark-teratorn-tierra-ii.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.