# N604U: 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 29, 2014
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=604U
- Page: https://openairdocs.org/aircraft/N604U

## Aircraft that carried N604U

- [Cancelled 2014-10-29](https://openairdocs.org/deregistered/N604U-2014-10-29): Grumman G-164, S/N 333, built 1964. Registration expired, pending cancellation. Owner: [Falk Ronald L](https://openairdocs.org/faa-owner/FALK%20RONALD%20L), [Park Rapids, MN](https://openairdocs.org/faa-place/MN/Park%20Rapids)

## NTSB investigations on N604U (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 MKC67F0067](https://openairdocs.org/ntsb/MKC67F0067), Jul 4, 1966: Grumman G-164 (N604U), Warren, MN, destroyed

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