# N604X: 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: December 14, 2009
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=604X
- Page: https://openairdocs.org/aircraft/N604X

## Aircraft that carried N604X

- [Cancelled 2009-12-14](https://openairdocs.org/deregistered/N604X-2009-12-14): Shultz Jeffrey D SONEX, S/N 604, built 2006. Triennial form not returned. Owner: [Shultz Jeffrey D](https://openairdocs.org/faa-owner/SHULTZ%20JEFFREY%20D), [Dixon, MO](https://openairdocs.org/faa-place/MO/Dixon)
- [Cancelled 1975-12-22](https://openairdocs.org/deregistered/N604X-1975-12-22): Sikorsky S-55B, S/N 55459. Owner: [Trans Alaska Helicopters Inc](https://openairdocs.org/faa-owner/TRANS%20ALASKA%20HELICOPTERS%20INC), [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle)

## NTSB investigations on N604X (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 CEN09CA391](https://openairdocs.org/ntsb/CEN09CA391), Jun 25, 2009: Shultz Jeffrey D Sonex (N604X), Mena, AR, substantial damage. Probable cause: The total loss of engine power for undetermined reasons.

## FAA accident and incident reports on N604X (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 20090624009549A](https://openairdocs.org/incident/20090624009549A), Jun 24, 2009: Amtr SONEX (N604X), Mena, AR, Substantial damage. (-23) On June 24, 2009, at approximately 1930 hours, N604X, ser number:604, an experimental amateur built aircraft, being operated by a certificated private…

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