# N446TN: 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: July 9, 1990
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=446TN
- Page: https://openairdocs.org/aircraft/N446TN

## Aircraft that carried N446TN

- [Cancelled 1990-07-09](https://openairdocs.org/deregistered/N446TN-1990-07-09): Hughes Helicopters HUGHES 369D, S/N 1211037D. N-number assigned, not yet registered

## NTSB investigations on N446TN (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 SEA90LA023](https://openairdocs.org/ntsb/SEA90LA023), Nov 29, 1989: Hughes 369D (N446TN), Stayton, OR, substantial damage. Probable cause: THE MAINTENANCE PERSONNEL FAILED TO RECORD THE PREVIOUS FLIGHT TIME FOR THE OVERRUNNING CLUTCH ON AIRWORTHINESS CERTIFICATION DOCUMENTS WHEN THE ASSEMBLY WAS OVERHAULED. ALSO, CAUSAL TO THE ACCIDENT…

## FAA accident and incident reports on N446TN (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 19891129047789A](https://openairdocs.org/incident/19891129047789A), Nov 29, 1989: Hughes 369D (N446TN), Stayton, OR, Substantial damage. Loud bang lost rotor RPM, settled, chopped tail boom. Spray clutch failed.

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