# N4374A: Nicholson Bill CHALLENGER II LW

- Status: Valid registration
- Airframe: [Nicholson Bill CHALLENGER II LW](https://openairdocs.org/model/nicholson-bill-challenger-ii-lw) (registry code 05901WH, 2 seats)
- Engine: [Rotax 503 DCDI](https://openairdocs.org/engine/rotax-503-dcdi) (registry code 55566)
- Serial number: CH205012093
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: November 25, 2007
- Certificate issued: December 19, 2023
- Expires: December 31, 2030
- Mode S code: A54004
- Registered owner: [Tpi Aviation LLC](https://openairdocs.org/faa-owner/TPI%20AVIATION%20LLC)
- Location: [Germantown, WI](https://openairdocs.org/faa-place/WI/Germantown)
- Owner type: LLC
- Owner's area on the map: 43.2322° N, 88.1158° W: Placed by OpenAirDocs at the center of ZIP code 53022, 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=4374A
- Page: https://openairdocs.org/aircraft/N4374A

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 (Nicholson Bill CHALLENGER II LW)

None in force.

### Matched by engine (Rotax 503 DCDI)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4374A.

## 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 20240201003549I](https://openairdocs.org/incident/20240201003549I), Feb 1, 2024: Nicholson Bill CHALLENGER II LW (N4374A), Milwaukee, WI, Minor damage. [privacy data omitted], Elsa, was conducting a high speed taxi on rwy 4L. Aircraft was hit with a gust of crosswind and lifted off the ground then descended…

## 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.

## Earlier aircraft with N4374A

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4374A before.

- [Cancelled 2004-08-27](https://openairdocs.org/deregistered/N4374A-2004-08-27): Roop RR-101, S/N 101. Triennial form not returned. Owner: [Roop Rick L](https://openairdocs.org/faa-owner/ROOP%20RICK%20L), [Warren, IN](https://openairdocs.org/faa-place/IN/Warren)
- [Cancelled 1970-04-21](https://openairdocs.org/deregistered/N4374A-1970-04-21): Beech E-55, S/N TE-804. Exported to Australia. Owner: [Air Capital International Inc](https://openairdocs.org/faa-owner/AIR%20CAPITAL%20INTERNATIONAL%20INC), [Augusta, KS](https://openairdocs.org/faa-place/KS/Augusta)
- [Cancelled 1967-02-23](https://openairdocs.org/deregistered/N4374A-1967-02-23): Piper PA-18-150, S/N 18-4776, built 1956. Exported to Canada. Owner: [Skyways Inc](https://openairdocs.org/faa-owner/SKYWAYS%20INC), [Cody, WY](https://openairdocs.org/faa-place/WY/Cody)

## Related

- Other Nicholson Bill CHALLENGER II LW aircraft: https://openairdocs.org/model/nicholson-bill-challenger-ii-lw/aircraft.md
- The Rotax 503 DCDI engine: https://openairdocs.org/engine/rotax-503-dcdi.md

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