# N8121M: 2000 Miller Marvin W BARNETT J4B-2, registration cancelled 2003-03-05

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 5, 2003
- Status when cancelled: Valid registration
- Airframe: [Miller Marvin W BARNETT J4B-2](https://openairdocs.org/model/miller-marvin-w-barnett-j4b-2) (registry code 056067S)
- Engine: [Subaru ALL MDLS A/B](https://openairdocs.org/engine/subaru-all-mdls-a-b) (registry code 59050)
- Serial number: 368-2
- Year built: 2000
- Type of aircraft: Rotorcraft
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: March 18, 2000
- Certificate issued: April 26, 2001
- Last registry action: April 26, 2001
- Mode S code: AB1351
- Owner when cancelled: [Dempsey Thomas K](https://openairdocs.org/faa-owner/DEMPSEY%20THOMAS%20K)
- Location: [New York, NY](https://openairdocs.org/faa-place/NY/New%20York)
- Owner type: Individual
- Owner's area on the map: 40.7319° N, 73.9891° W: Placed by OpenAirDocs at the center of ZIP code 10003, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N8121M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=8121M
- Page: https://openairdocs.org/deregistered/N8121M-2003-03-05

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 Miller Marvin W BARNETT J4B-2: https://openairdocs.org/model/miller-marvin-w-barnett-j4b-2.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 IAD02LA054](https://openairdocs.org/ntsb/IAD02LA054), May 26, 2002: Miller Barnet J4B-2 (N8121M), Manville, NJ, substantial damage. Probable cause: The pilot's improper flare prior to touchdown. A factor was the pilot's lack of experience in aircraft type, make, and model.

## 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 20020526010489A](https://openairdocs.org/incident/20020526010489A), May 26, 2002: Amtr J4B2 (N8121M), Manville, NJ, No damage. (.19) On may 26, 2002, at 1024 eastern daylight time, a barnett J4B-2 homebuilt gyrocopter, N8121M, was substantially damaged during landing to the sod…

## Other aircraft with N8121M

- [Cancelled 1995-08-09](https://openairdocs.org/deregistered/N8121M-1995-08-09): Beech B200, S/N BB1445. Exported to India. Owner: [Rangeflyers Inc](https://openairdocs.org/faa-owner/RANGEFLYERS%20INC), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)
- [Cancelled 1989-12-12](https://openairdocs.org/deregistered/N8121M-1989-12-12): Cessna 310I, S/N 310I0121. Triennial form not returned

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