# N231HT: 1979 Mooney M20K, registration cancelled 2017-04-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 4, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Mooney M20K](https://openairdocs.org/model/mooney-m20k) (registry code 5870220)
- Engine: [Continental TSIO-360 series](https://openairdocs.org/engine/continental-tsio-360-series) (registry code 17019)
- Data sheets: [TCDS 2A3](https://openairdocs.org/tcds/2A3), [TCDS E9CE](https://openairdocs.org/tcds/E9CE) (OpenAirDocs)
- Serial number: 25-0267
- Year built: 1979
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: November 30, 1979
- Certificate issued: May 7, 1980
- Last registry action: March 6, 2001
- Mode S code: A20CF8
- Owner when cancelled: [John Arthur W](https://openairdocs.org/faa-owner/JOHN%20ARTHUR%20W)
- Location: [Brookfield, CT](https://openairdocs.org/faa-place/CT/Brookfield)
- Owner type: Individual
- Owner's area on the map: 41.7489° N, 72.8894° W: Placed by OpenAirDocs at the center of ZIP code 06085, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N231HT
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=231HT
- Page: https://openairdocs.org/deregistered/N231HT-2017-04-04

From the FAA registry file of October 28, 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 M20K: https://openairdocs.org/model/mooney-m20k.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 NYC83FA121](https://openairdocs.org/ntsb/NYC83FA121), May 20, 1983: Mooney M-20K (N231HT), Old Lyme, CT, destroyed, 1 fatal

## 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 19830520020329A](https://openairdocs.org/incident/19830520020329A), May 20, 1983: Mooney M20K (N231HT), Old Lyme, CT, Destroyed. Lost vacuum instruments due to a sheared vacuum pump shaft. Lost control of aircraft. No reference to a basic panel

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