# N556MM: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 1
- Last cancelled: October 20, 2017
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=556MM
- Page: https://openairdocs.org/aircraft/N556MM

## Aircraft that carried N556MM

- [Cancelled 2017-10-20](https://openairdocs.org/deregistered/N556MM-2017-10-20): Robinson Helicopter R44 II, S/N 10111, built 2003. Registration expired, pending cancellation. Owner: [Johnson Helicopter Services LLC](https://openairdocs.org/faa-owner/JOHNSON%20HELICOPTER%20SERVICES%20LLC), [Emerson, IA](https://openairdocs.org/faa-place/IA/Emerson)

## NTSB investigations on N556MM (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 on N556MM (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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