# N4181K: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 2
- Last cancelled: November 4, 2008
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4181K
- Page: https://openairdocs.org/aircraft/N4181K

## Aircraft that carried N4181K

- [Cancelled 2008-11-04](https://openairdocs.org/deregistered/N4181K-2008-11-04): Robinson Helicopter R44 II, S/N 12531. Exported to Italy. Owner: [Helistream Inc](https://openairdocs.org/faa-owner/HELISTREAM%20INC), [Costa Mesa, CA](https://openairdocs.org/faa-place/CA/Costa%20Mesa)
- [Cancelled 2002-12-03](https://openairdocs.org/deregistered/N4181K-2002-12-03): Ryan NAVION, S/N NAV-4-1181, built 1948. Triennial form not returned. Owner: [Hansen Don K](https://openairdocs.org/faa-owner/HANSEN%20DON%20K), [Rocky Ford, CO](https://openairdocs.org/faa-place/CO/Rocky%20Ford)

## NTSB investigations on N4181K (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 FTW78FPD11](https://openairdocs.org/ntsb/FTW78FPD11), Dec 18, 1977: Ryan Navion (N4181K), Denton, TX, substantial damage

## FAA accident and incident reports on N4181K (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 19771218039939A](https://openairdocs.org/incident/19771218039939A), Dec 18, 1977: Navion NAVION/ (N4181K), Denton, TX, Substantial damage

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