# N4031M: 2004 Frost Stephen CHINOOK PLUS 2

- Status: Valid registration
- Airframe: [Frost Stephen CHINOOK PLUS 2](https://openairdocs.org/model/frost-stephen-chinook-plus-2) (registry code 056140E, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 02158
- Year built: 2004
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Aircraft Sales & Parts Ltd CHINOOK PLUS 2
- Airworthiness: Experimental, amateur built
- Airworthiness date: December 7, 2004
- Certificate issued: February 28, 2003
- Expires: August 31, 2029
- Mode S code: A4BA4D
- Registered owner: [Frost Stephen A](https://openairdocs.org/faa-owner/FROST%20STEPHEN%20A)
- Location: [Edmonds, WA](https://openairdocs.org/faa-place/WA/Edmonds)
- Owner type: Individual
- Owner's area on the map: 47.8006° N, 122.3742° W: Placed by OpenAirDocs at the center of ZIP code 98020, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4031M
- Page: https://openairdocs.org/aircraft/N4031M

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 (Frost Stephen CHINOOK PLUS 2)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4031M.

## FAA accident and incident reports

None matched to N4031M.

## 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 N4031M

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4031M before.

- [Cancelled 2000-01-08](https://openairdocs.org/deregistered/N4031M-2000-01-08): Adams Balloon A55S, S/N 114. Triennial form not returned. Owner: [Murphy Sean G](https://openairdocs.org/faa-owner/MURPHY%20SEAN%20G), [Cary, IL](https://openairdocs.org/faa-place/IL/Cary)
- [Cancelled 1981-06-29](https://openairdocs.org/deregistered/N4031M-1981-06-29): Hiller UH-12E, S/N 5168. Exported to Argentina. Owner: [Hiller Aviation](https://openairdocs.org/faa-owner/HILLER%20AVIATION), [Porterville, CA](https://openairdocs.org/faa-place/CA/Porterville)
- [Cancelled 1974-11-22](https://openairdocs.org/deregistered/N4031M-1974-11-22): Piper PA-12, S/N 12-2916. Owner: [Shelton John N](https://openairdocs.org/faa-owner/SHELTON%20JOHN%20N), [Summerville, SC](https://openairdocs.org/faa-place/SC/Summerville)

## Related

- Other Frost Stephen CHINOOK PLUS 2 aircraft: https://openairdocs.org/model/frost-stephen-chinook-plus-2/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.