# N83NK: Labheart Norman KLB TW STR MK III EX

- Status: Valid registration
- Airframe: [Labheart Norman KLB TW STR MK III EX](https://openairdocs.org/model/labheart-norman-klb-tw-str-mk-iii-ex) (registry code 05617Z4, 2 seats)
- Engine: [Rotax SEE BOMBADIER](https://openairdocs.org/engine/rotax-see-bombadier) (registry code 55555)
- Serial number: M3X-04-1-00052
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: New Kolb Aircraft KOLB MARK III EXTRA
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 1, 2004
- Certificate issued: November 1, 2016
- Expires: November 30, 2029
- Mode S code: AB5737
- Registered owner: [Genteman William J](https://openairdocs.org/faa-owner/GENTEMAN%20WILLIAM%20J)
- Location: [Pewaukee, WI](https://openairdocs.org/faa-place/WI/Pewaukee)
- Owner type: Individual
- Owner's area on the map: 43.0800° N, 88.2666° W: Placed by OpenAirDocs at the center of ZIP code 53072, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=83NK
- Page: https://openairdocs.org/aircraft/N83NK

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 (Labheart Norman KLB TW STR MK III EX)

None in force.

### Matched by engine (Rotax SEE BOMBADIER)

None in force.

## Information bulletins (advisory)

None matched.

## 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 NYC05LA017](https://openairdocs.org/ntsb/NYC05LA017), Nov 14, 2004: Labhart Kolb Twinstar Mk III (N83NK), London, KY, substantial damage, 1 fatal. Probable cause: The pilot's inadequate preflight inspection, which resulted in a total loss of engine power due to fuel contamination. A factor was the lack of an installed fuel strainer.

## 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 20041115028359A](https://openairdocs.org/incident/20041115028359A), Nov 15, 2004: KOLBMKIIIEXT (N83NK), London, KY, Substantial damage, 1 fatal. (-23) An experimental amateur built, kolb mark iii xtra two place aircraft impacted ground just short, slightly below, and to left of 260 degree grass runway…

## 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 Labheart Norman KLB TW STR MK III EX aircraft: https://openairdocs.org/model/labheart-norman-klb-tw-str-mk-iii-ex/aircraft.md
- The Rotax SEE BOMBADIER engine: https://openairdocs.org/engine/rotax-see-bombadier.md

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