# N23HF: 2021 Hunter Ferrell RANS S6

- Status: Valid registration
- Airframe: [Hunter Ferrell RANS S6](https://openairdocs.org/model/hunter-ferrell-rans-s6) (registry code 056396A, 2 seats)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: 1
- Year built: 2021
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 1, 2021
- Certificate issued: July 17, 2025
- Expires: July 31, 2032
- Mode S code: A206DC
- Registered owner: [Davidson Robert K](https://openairdocs.org/faa-owner/DAVIDSON%20ROBERT%20K)
- Location: [Ottawa, KS](https://openairdocs.org/faa-place/KS/Ottawa)
- Owner type: Individual
- Owner's area on the map: 38.6197° N, 95.2844° W: Placed by OpenAirDocs at the center of ZIP code 66067, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=23HF
- Page: https://openairdocs.org/aircraft/N23HF

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. The registry lists only the engine series, so ADs for every Rotax 912ULS model are included.

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

### Matched by airframe (Hunter Ferrell RANS S6)

None in force.

### Matched by engine (Rotax 912ULS series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N23HF.

## 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 20210615010419I](https://openairdocs.org/incident/20210615010419I), Jun 15, 2021: Hunter Ferrell RANS S6 (N23HF), Tulsa, OK, Minor damage. Upon landing and during rollout, applied brakes and nose gear tube buckled and collapsed. Propeller struck the ground.

## 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 N23HF

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N23HF before.

- [Cancelled 2011-08-18](https://openairdocs.org/deregistered/N23HF-2011-08-18): Raytheon C90GT, S/N LJ-1760. Exported to Brazil. Owner: [International Aircraft Sales LLC](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIRCRAFT%20SALES%20LLC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale)

## Related

- Other Hunter Ferrell RANS S6 aircraft: https://openairdocs.org/model/hunter-ferrell-rans-s6/aircraft.md
- The Rotax 912ULS series engine: https://openairdocs.org/engine/rotax-912uls-series.md

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