# N556MM: 2003 Robinson Helicopter R44 II, registration cancelled 2017-10-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 20, 2017
- Status when cancelled: Registration expired, pending cancellation
- 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: 10111
- Year built: 2003
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Multiple
- Airworthiness date: May 19, 2011
- Certificate issued: April 30, 2011
- Last registry action: April 30, 2011
- Mode S code: A716D4
- Owner when cancelled: [Johnson Helicopter Services LLC](https://openairdocs.org/faa-owner/JOHNSON%20HELICOPTER%20SERVICES%20LLC)
- Location: [Emerson, IA](https://openairdocs.org/faa-place/IA/Emerson)
- Owner type: Corporation
- Owner's area on the map: 41.0395° N, 95.3782° W: Placed by OpenAirDocs at the center of ZIP code 51533, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N556MM
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=556MM
- Page: https://openairdocs.org/deregistered/N556MM-2017-10-20

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 CEN12LA443](https://openairdocs.org/ntsb/CEN12LA443), Jul 14, 2012: Robinson Helicopter R44 II (N556MM), Red Oak, IA, substantial damage. Probable cause: The pilot's failure to maintain clearance from the ground-support vehicle during landing.

## 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 20120714015549A](https://openairdocs.org/incident/20120714015549A), Jul 14, 2012: Robinson Helicopter Company R44 II (N556MM), Red Oak, IA, Destroyed. The airman departed an agricultural field site after servicing the aircraft with chemicals for aerial application. While flying away the airman noted that the…

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