# N4221A: 1991 Ratte James CHALLENGER II

- Status: Valid registration
- Airframe: [Ratte James CHALLENGER II](https://openairdocs.org/model/ratte-james-challenger-ii) (registry code 05676RG, 1 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: CH201910612
- Year built: 1991
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: November 18, 1991
- Certificate issued: July 15, 1998
- Expires: December 31, 2027
- Mode S code: A50589
- Registered owner: [Kretschman James G](https://openairdocs.org/faa-owner/KRETSCHMAN%20JAMES%20G)
- Location: [Fennimore, WI](https://openairdocs.org/faa-place/WI/Fennimore)
- Owner type: Individual
- Owner's area on the map: 42.9936° N, 90.6332° W: Placed by OpenAirDocs at the center of ZIP code 53809, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4221A
- Page: https://openairdocs.org/aircraft/N4221A

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 (Ratte James CHALLENGER II)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4221A.

## FAA accident and incident reports

None matched to N4221A.

## 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 N4221A

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4221A before.

- [Cancelled 1964-09-16](https://openairdocs.org/deregistered/N4221A-1964-09-16): Grumman G-21A, S/N 1030. Owner: [Catalina Channel Airlines Inc](https://openairdocs.org/faa-owner/CATALINA%20CHANNEL%20AIRLINES%20INC), [Long Beach, CA](https://openairdocs.org/faa-place/CA/Long%20Beach)
- [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N4221A-undated): Cessna 310R, S/N 310R1378. N-number assigned, not yet registered

## Related

- Other Ratte James CHALLENGER II aircraft: https://openairdocs.org/model/ratte-james-challenger-ii/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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