# N569SX: 2005 Martin Richard B SONEX, registration cancelled 2024-08-27

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 27, 2024
- Status when cancelled: Valid registration
- Airframe: [Martin Richard B SONEX](https://openairdocs.org/model/martin-richard-b-sonex) (registry code 05619AM)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 0569
- Year built: 2005
- Type of aircraft: Fixed wing single engine
- Kit: Sonex Ltd SONEX
- Airworthiness: Experimental, operating kit built
- Airworthiness date: April 29, 2005
- Certificate issued: July 26, 2018
- Last registry action: May 26, 2023
- Mode S code: A749FF
- Owner when cancelled: [Helmholdt Andrew W](https://openairdocs.org/faa-owner/HELMHOLDT%20ANDREW%20W)
- Location: [Lawton, MI](https://openairdocs.org/faa-place/MI/Lawton)
- Owner type: Individual
- Owner's area on the map: 42.1383° N, 85.8421° W: Placed by OpenAirDocs at the center of ZIP code 49065, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N569SX
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=569SX
- Page: https://openairdocs.org/deregistered/N569SX-2024-08-27

From the FAA registry file of November 5, 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 Martin Richard B SONEX: https://openairdocs.org/model/martin-richard-b-sonex.md

## NTSB investigations (2)

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 CEN23FA410](https://openairdocs.org/ntsb/CEN23FA410), Sep 10, 2023: Sonex Sonex (N569SX), Dowagiac, MI, substantial damage, 1 fatal. Probable cause: The total loss of engine power due to the failure of the ignition distributor rotor.
- [NTSB CHI05LA158](https://openairdocs.org/ntsb/CHI05LA158), Jun 25, 2005: Martin Sonex (N569SX), Allegan, MI, substantial damage. Probable cause: The inadequate aircraft control by the PA-28-180 pilot while the airplane was stopped.

## FAA accident and incident reports (2)

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 20230910013629A](https://openairdocs.org/incident/20230910013629A), Sep 10, 2023: Martin Richard B SONEX (N569SX), Dowagiac, MI, Substantial damage, 1 fatal. Narrative: On September 10th at approximately 1100 local time aircraft [privacy data omitted] an experimental / homebuilt piloted by a certificated private…
- [Accident 20050625013622A](https://openairdocs.org/incident/20050625013622A), Jun 25, 2005: Amtr SONEX (N569SX), Allegan, MI, Minor damage. (-23) While holding in #1 position for takeoff, the aircraft in #2 position taxied into the tail. The propeller sliced through the outbd sections of the left…

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