# N4025X: 2003 Hunter Bob HUNTER-CYGNET

- Status: Valid registration
- Airframe: [Hunter Bob HUNTER-CYGNET](https://openairdocs.org/model/hunter-bob-hunter-cygnet) (registry code 05615SM, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 0001
- Year built: 2003
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: November 10, 2003
- Certificate issued: July 20, 2018
- Expires: July 31, 2028
- Mode S code: A4B72C
- Registered owner: [Paris William M](https://openairdocs.org/faa-owner/PARIS%20WILLIAM%20M)
- Location: [Polson, MT](https://openairdocs.org/faa-place/MT/Polson)
- Owner type: Individual
- Owner's area on the map: 47.7158° N, 114.1862° W: Placed by OpenAirDocs at the center of ZIP code 59860, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4025X
- Page: https://openairdocs.org/aircraft/N4025X

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 (Hunter Bob HUNTER-CYGNET)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4025X.

## FAA accident and incident reports

None matched to N4025X.

## 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 N4025X

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4025X before.

- [Cancelled 1999-03-22](https://openairdocs.org/deregistered/N4025X-1999-03-22): Aero Commander 100-180, S/N 5125. Triennial form not returned. Owner: [Graham Jerry](https://openairdocs.org/faa-owner/GRAHAM%20JERRY), [Hart, MI](https://openairdocs.org/faa-place/MI/Hart)

## Related

- Other Hunter Bob HUNTER-CYGNET aircraft: https://openairdocs.org/model/hunter-bob-hunter-cygnet/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.