# N3976N: Nicholson Knox W RV-4

- Status: Valid registration
- Airframe: [Nicholson Knox W RV-4](https://openairdocs.org/model/nicholson-knox-w-rv-4) (registry code 056133S, 2 seats)
- Serial number: 279
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Certificate issued: March 19, 2002
- Expires: January 31, 2030
- Mode S code: A4A001
- Registered owner: [Vaughn Thomas N](https://openairdocs.org/faa-owner/VAUGHN%20THOMAS%20N)
- Location: [Tulia, TX](https://openairdocs.org/faa-place/TX/Tulia)
- Owner type: Individual
- Owner's area on the map: 34.5755° N, 101.6920° W: Placed by OpenAirDocs at the center of ZIP code 79088, within about 14 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3976N
- Page: https://openairdocs.org/aircraft/N3976N

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 (Nicholson Knox W RV-4)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N3976N.

## FAA accident and incident reports

None matched to N3976N.

## 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 N3976N

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N3976N before.

- [Cancelled 1968-02-27](https://openairdocs.org/deregistered/N3976N-1968-02-27): Mooney M20C, S/N 680011. Exported to Canada. Owner: [Mooney Corp](https://openairdocs.org/faa-owner/MOONEY%20CORP), [Kerrville, TX](https://openairdocs.org/faa-place/TX/Kerrville)
- [Cancelled 1951-04-25](https://openairdocs.org/deregistered/N3976N-1951-04-25): Beech 35, S/N D573. Owner: [Petroleum Products Refining And Producing Co](https://openairdocs.org/faa-owner/PETROLEUM%20PRODUCTS%20REFINING%20AND%20PRODUCING%20CO), [Pruitt, NM](https://openairdocs.org/faa-place/NM/Pruitt)

## Related

- Other Nicholson Knox W RV-4 aircraft: https://openairdocs.org/model/nicholson-knox-w-rv-4/aircraft.md

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