# N81JM: 1981 Mason John H KR-2

- Status: Valid registration
- Airframe: [Mason John H KR-2](https://openairdocs.org/model/mason-john-h-kr-2) (registry code 05648ES, 2 seats)
- Engine: [Volkswagen CONVERSION](https://openairdocs.org/engine/volkswagen-conversion) (registry code 63501)
- Serial number: 1
- Year built: 1981
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: June 4, 1982
- Certificate issued: June 5, 1987
- Expires: July 31, 2027
- Mode S code: AB07D7
- Registered owner: [Sack Gary N](https://openairdocs.org/faa-owner/SACK%20GARY%20N)
- Location: [Eureka, CA](https://openairdocs.org/faa-place/CA/Eureka)
- Owner type: Individual
- Owner's area on the map: 40.8016° N, 124.1449° W: Placed by OpenAirDocs at the center of ZIP code 95501, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=81JM
- Page: https://openairdocs.org/aircraft/N81JM

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Mason John H KR-2)

None in force.

### Matched by engine (Volkswagen CONVERSION)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N81JM.

## 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.

- [Incident 19890601031399I](https://openairdocs.org/incident/19890601031399I), Jun 1, 1989: Amtr KR2 (N81JM), Elko, NV, Minor damage. Hard landing in crosswind. Bounced twice and main gear collapsed. Both locking pins were broken.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Mason John H KR-2 aircraft: https://openairdocs.org/model/mason-john-h-kr-2/aircraft.md
- The Volkswagen CONVERSION engine: https://openairdocs.org/engine/volkswagen-conversion.md

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