# N831J: 1999 Sergent Don L GREAT LAKES 2T1A

- Status: Valid registration
- Airframe: [Sergent Don L GREAT LAKES 2T1A](https://openairdocs.org/model/sergent-don-l-great-lakes-2t1a) (registry code 05605OP, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 9712-3-647
- Year built: 1999
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 8, 1999
- Certificate issued: August 23, 2023
- Expires: August 31, 2030
- Mode S code: AB5CD9
- Registered owner: [Madshack Aeroviation LLC](https://openairdocs.org/faa-owner/MADSHACK%20AEROVIATION%20LLC)
- Location: [Reston, VA](https://openairdocs.org/faa-place/VA/Reston)
- Owner type: LLC
- Owner's area on the map: 38.9592° N, 77.3411° W: Placed by OpenAirDocs at the center of ZIP code 20190, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=831J
- Page: https://openairdocs.org/aircraft/N831J

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 (Sergent Don L GREAT LAKES 2T1A)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N831J.

## FAA accident and incident reports

None matched to N831J.

## Service difficulty reports (1)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 2010FA0000042](https://openairdocs.org/sdr/2010FA0000042), Dec 22, 2009: GROMMET. FAILED. FAILURE OF A RUBBER GROMMET ON THE PRIMARY 28 VDC DC POWER CABLE PASSING THROUGH THE FIRE WALL WAS FOUND DURING AN INSPECTION. FAILURE OF THIS GROMMET AND CHAFI

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Sergent Don L GREAT LAKES 2T1A aircraft: https://openairdocs.org/model/sergent-don-l-great-lakes-2t1a/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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