# N138US: 1967 Bell UH-1L, registration cancelled 2018-02-12

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 12, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Bell UH-1L](https://openairdocs.org/model/bell-uh-1l) (registry code 1181401)
- Engine: [Lycoming T-53 series](https://openairdocs.org/engine/lycoming-t-53-series) (registry code 41552)
- Data sheets: [TCDS H4NM](https://openairdocs.org/tcds/H4NM) (OpenAirDocs)
- Serial number: 154944
- Year built: 1967
- Type of aircraft: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Restricted, other
- Airworthiness date: January 21, 1988
- Certificate issued: November 15, 1990
- Last registry action: October 8, 2012
- Mode S code: A09ABC
- Owners when cancelled: [Duff J W DBA](https://openairdocs.org/faa-owner/DUFF%20J%20W%20DBA), [J W Duff Aircraft Co](https://openairdocs.org/faa-owner/J%20W%20DUFF%20AIRCRAFT%20CO)
- Location: [Denver, CO](https://openairdocs.org/faa-place/CO/Denver)
- Owner type: Individual
- Owner's area on the map: 39.7614° N, 104.9167° W: Placed by OpenAirDocs at the center of ZIP code 80207, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N138US
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=138US
- Page: https://openairdocs.org/deregistered/N138US-2018-02-12

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Bell UH-1L: https://openairdocs.org/model/bell-uh-1l.md

## NTSB investigations (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 (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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