# N31PY: 1995 Yarnall Paul J HUMMELBIRD

- Status: Valid registration
- Airframe: [Yarnall Paul J HUMMELBIRD](https://openairdocs.org/model/yarnall-paul-j-hummelbird) (registry code 05601F7, 1 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 001
- Year built: 1995
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: October 12, 1995
- Certificate issued: August 1, 2018
- Expires: August 31, 2028
- Mode S code: A345D4
- Registered owner: [Proflight LLC](https://openairdocs.org/faa-owner/PROFLIGHT%20LLC)
- Location: [Hudson, WI](https://openairdocs.org/faa-place/WI/Hudson)
- Owner type: LLC
- Owner's area on the map: 44.9812° N, 92.6948° W: Placed by OpenAirDocs at the center of ZIP code 54016, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=31PY
- Page: https://openairdocs.org/aircraft/N31PY

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 (Yarnall Paul J HUMMELBIRD)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N31PY.

## FAA accident and incident reports

None matched to N31PY.

## 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 Yarnall Paul J HUMMELBIRD aircraft: https://openairdocs.org/model/yarnall-paul-j-hummelbird/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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