# N138US: 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: February 12, 2018
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=138US
- Page: https://openairdocs.org/aircraft/N138US

## Aircraft that carried N138US

- [Cancelled 2018-02-12](https://openairdocs.org/deregistered/N138US-2018-02-12): Bell UH-1L, S/N 154944, built 1967. Registration expired, pending cancellation. Owner: [Duff J W DBA](https://openairdocs.org/faa-owner/DUFF%20J%20W%20DBA), [Denver, CO](https://openairdocs.org/faa-place/CO/Denver)

## NTSB investigations on N138US (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 LAX90DUJ05](https://openairdocs.org/ntsb/LAX90DUJ05), Nov 4, 1989: Bell UH-1E (N138US), Mesa, AZ, destroyed. Probable cause: THE INFLIGHT SEPARATION OF THE TAIL ROTOR DUE TO IMPROPER MAINTENANCE PROCEDURES AND THE INSTALLATION OF INCORRECT ATTACHMENT HARDWARE ON THE TAIL ROTOR BLADE PITCH CHANGE LINKAGES.

## FAA accident and incident reports on N138US (2)

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 19891104044199A](https://openairdocs.org/incident/19891104044199A), Nov 4, 1989: Bell UH1E (N138US), Mesa, AZ, Destroyed. Tail rotor pitch change bolt failed and rotor assembly tore off. Crashed in uncontrolled turn and rolled over.
- [Incident 19890916056689I](https://openairdocs.org/incident/19890916056689I), Sep 16, 1989: Bell UH1E (N138US), Gilbert, AZ, Minor damage. Malfunction in helicopters collective system. Forced landing. A loose collective hydraulic servo fell off mount.

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