# N4181K: Robinson Helicopter R44 II, registration cancelled 2008-11-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 4, 2008
- Exported to: Italy
- Status when cancelled: Valid registration
- Airframe: [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii) (registry code 7640122)
- Data sheets: [TCDS H11NM](https://openairdocs.org/tcds/H11NM) (OpenAirDocs)
- Serial number: 12531
- Type of aircraft: Rotorcraft
- Last registry action: October 31, 2008
- Mode S code: A4F45D
- Owner when cancelled: [Helistream Inc](https://openairdocs.org/faa-owner/HELISTREAM%20INC)
- Location: [Costa Mesa, CA](https://openairdocs.org/faa-place/CA/Costa%20Mesa)
- Owner type: Corporation
- Owner's area on the map: 33.6796° N, 117.9085° W: Placed by OpenAirDocs at the center of ZIP code 92626, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4181K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4181K
- Page: https://openairdocs.org/deregistered/N4181K-2008-11-04

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Robinson Helicopter R44 II: https://openairdocs.org/model/robinson-helicopter-r44-ii.md

## Other aircraft with N4181K

- [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)

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