# N46HF: 2004 Robinson Helicopter R44 II, registration cancelled 2017-12-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 20, 2017
- Status when cancelled: Valid registration
- Airframe: [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii) (registry code 7640122)
- Engine: [Lycoming IO-540 series](https://openairdocs.org/engine/lycoming-io-540-series) (registry code 41530)
- Data sheets: [TCDS H11NM](https://openairdocs.org/tcds/H11NM), [TCDS 1E4](https://openairdocs.org/tcds/1E4) (OpenAirDocs)
- Serial number: 10494
- Year built: 2004
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: September 21, 2004
- Certificate issued: February 1, 2013
- Last registry action: September 28, 2015
- Mode S code: A597F7
- Owner when cancelled: [November Alpha LLC](https://openairdocs.org/faa-owner/NOVEMBER%20ALPHA%20LLC)
- Location: [Newark, DE](https://openairdocs.org/faa-place/DE/Newark)
- Owner type: Corporation
- Owner's area on the map: 39.7138° N, 75.7408° W: Placed by OpenAirDocs at the center of ZIP code 19711, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N46HF
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=46HF
- Page: https://openairdocs.org/deregistered/N46HF-2017-12-20

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

## 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 GAA16CA488](https://openairdocs.org/ntsb/GAA16CA488), Sep 14, 2016: Robinson Helicopter R44 II (N46HF), Cedar City, UT, substantial damage. Probable cause: The flight instructor’s delayed remedial action while providing hover instruction in gusting wind conditions, which resulted in dynamic roll-over.

## 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 20160914018319A](https://openairdocs.org/incident/20160914018319A), Sep 14, 2016: Robinson Helicopter Company R44 II (N46HF), Cedar City, UT, Substantial damage. The CFI stated, "the student took controls to attempt to hover and began a nose down and right lateral movement. CFI stated, he immediately took controls and…

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