# N3456X: 1966 Mooney M20C, registration cancelled 1989-09-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 18, 1989
- Status when cancelled: Valid registration
- Airframe: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (registry code 5870208)
- Data sheets: [TCDS 2A3](https://openairdocs.org/tcds/2A3) (OpenAirDocs)
- Serial number: 3411
- Year built: 1966
- Type of aircraft: Fixed wing single engine
- Certificate issued: May 9, 1988
- Mode S code: A3D321
- Owner when cancelled: [Finster John N](https://openairdocs.org/faa-owner/FINSTER%20JOHN%20N)
- Location: [Boca Raton, FL](https://openairdocs.org/faa-place/FL/Boca%20Raton)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N3456X
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3456X
- Page: https://openairdocs.org/deregistered/N3456X-1989-09-18

From the FAA registry file of November 7, 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 Mooney M20C: https://openairdocs.org/model/mooney-m20c.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 DEN89LA221](https://openairdocs.org/ntsb/DEN89LA221), Sep 18, 1989: Mooney M20C (N3456X), Neihart, MT, destroyed. Probable cause: VFR FLIGHT BY THE PILOT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC) AND HIS FAILURE TO MAINTAIN SUFFICIENT ALTITUDE. RELATED FACTORS WERE: THE HIGH TERRAIN AND ADVERSE WEATHER CONDITIONS.

## 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 19890918035389A](https://openairdocs.org/incident/19890918035389A), Sep 18, 1989: Mooney M20C (N3456X), Neihart, MT, Destroyed. Reported was on top when weather deteriorated, descended into trees on mountain top. Reported he was VFR at impact.

---
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.