# N4191T: 1968 Hughes OH-6A

- Status: Valid registration
- Airframe: [Hughes OH-6A](https://openairdocs.org/model/hughes-oh-6a) (registry code 4470905, 4 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE) (MD Helicopters LLC) (OpenAirDocs)
- Serial number: 67-16164
- Year built: 1968
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, normal
- Airworthiness date: July 14, 1998
- Certificate issued: August 7, 2025
- Expires: August 31, 2032
- Mode S code: A4F81C
- Registered owner: [Wilson Robert B](https://openairdocs.org/faa-owner/WILSON%20ROBERT%20B)
- Location: [Superior, AZ](https://openairdocs.org/faa-place/AZ/Superior)
- Owner type: Individual
- Owner's area on the map: 33.2683° N, 111.1365° W: Placed by OpenAirDocs at the center of ZIP code 85173, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4191T
- Page: https://openairdocs.org/aircraft/N4191T

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Hughes OH-6A)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## 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 WPR25LA101](https://openairdocs.org/ntsb/WPR25LA101), Feb 22, 2025: Hughes OH-6A (N4191T), Santa Teresa, NM, substantial damage. Probable cause: The flight instructor's failure to maintain helicopter control during a practice autorotation, which resulted in a hard landing and structural damage to the tail boom and subsequent failure of the…

## FAA accident and incident reports (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 20250222002299A](https://openairdocs.org/incident/20250222002299A), Feb 22, 2025: Hughes OH-6A (N4191T), Santa Teresa, NM, Substantial damage. On February 22, 2025, at or around 16:20 MST, a Hughes OH-6 tail rotor struck the tail boom and crashed (accident) at Dona ana county municipal airport (dna),…

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N4191T

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4191T before.

- [Cancelled 1991-05-30](https://openairdocs.org/deregistered/N4191T-1991-05-30): Raven Industries S-66A, S/N S66A132. Triennial form not returned. Owner: [Continental Divide Company](https://openairdocs.org/faa-owner/CONTINENTAL%20DIVIDE%20COMPANY), [Aspen, CO](https://openairdocs.org/faa-place/CO/Aspen)

## Related

- Other Hughes OH-6A aircraft: https://openairdocs.org/model/hughes-oh-6a/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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