# N731Y: 1930 Bird BK

- Status: Valid registration
- Airframe: [Bird BK](https://openairdocs.org/model/bird-bk) (registry code 6840106, 3 seats)
- Engine: [Kinner K5 series](https://openairdocs.org/engine/kinner-k5-series) (registry code 37503)
- Serial number: 2039-19
- Year built: 1930
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: October 29, 1957
- Certificate issued: December 18, 2018
- Expires: December 31, 2028
- Mode S code: A9D0E8
- Registered owner: [Nichols Charles F Trustee](https://openairdocs.org/faa-owner/NICHOLS%20CHARLES%20F%20TRUSTEE)
- Location: [Baldwin Park, CA](https://openairdocs.org/faa-place/CA/Baldwin%20Park)
- Owner type: Individual
- Owner's area on the map: 34.0974° N, 117.9683° W: Placed by OpenAirDocs at the center of ZIP code 91706, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=731Y
- Page: https://openairdocs.org/aircraft/N731Y

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. The registry lists only the engine series, so ADs for every Kinner K5 model are included.

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

### Matched by airframe (Bird BK)

None in force.

### Matched by engine (Kinner K5 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N731Y.

## 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 19940812043349A](https://openairdocs.org/incident/19940812043349A), Aug 12, 1994: Perth BIRDBK (N731Y), El Cajon, CA, Substantial damage. Pilot reported whirlwind lifted tail near end landing roll causing swerve off runway and ground loop.

## 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.

## Related

- Other Bird BK aircraft: https://openairdocs.org/model/bird-bk/aircraft.md
- The Kinner K5 series engine: https://openairdocs.org/engine/kinner-k5-series.md

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