# N4073S: 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: January 21, 2005
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4073S
- Page: https://openairdocs.org/aircraft/N4073S

## Aircraft that carried N4073S

- [Cancelled 2005-01-21](https://openairdocs.org/deregistered/N4073S-2005-01-21): Eurocopter AS 350 BA, S/N 3041. Exported to Canada. Owner: [Sunshine Helicopters Inc](https://openairdocs.org/faa-owner/SUNSHINE%20HELICOPTERS%20INC), [Kahului, HI](https://openairdocs.org/faa-place/HI/Kahului)
- [Cancelled 1993-02-10](https://openairdocs.org/deregistered/N4073S-1993-02-10): Robinson Helicopter R22 BETA, S/N 1889. Owner: [Helicopters International Inc](https://openairdocs.org/faa-owner/HELICOPTERS%20INTERNATIONAL%20INC), [Spring, TX](https://openairdocs.org/faa-place/TX/Spring)

## NTSB investigations on N4073S (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 FTW92FA224](https://openairdocs.org/ntsb/FTW92FA224), Sep 5, 1992: Robinson R22 (N4073S), Alpine, TX, destroyed, 1 fatal. Probable cause: Failure by the pilot-in-command, for unknown reasons, to maintain sufficient altitude to clear surrounding terrain. Factors were mountainous terrain and high density altitude.

## FAA accident and incident reports on N4073S (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 19920905035369A](https://openairdocs.org/incident/19920905035369A), Sep 5, 1992: Robsin R22BETA (N4073S), Alpine, TX, Destroyed, 1 fatal. Struck mountainside. Over gross weight and high density altitude factors.

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