# N107BW: 1991 Blumer James Allen CHALLENGER II SPEC

- Status: Valid registration
- Airframe: [Blumer James Allen CHALLENGER II SPEC](https://openairdocs.org/model/blumer-james-allen-challenger-ii-spec) (registry code 05676SM, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: CH20291CW0647
- Year built: 1991
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: October 30, 1991
- Certificate issued: February 11, 1992
- Expires: July 31, 2029
- Mode S code: A01EE3
- Registered owner: [Blumer James Allen](https://openairdocs.org/faa-owner/BLUMER%20JAMES%20ALLEN)
- Location: [Sun City, AZ](https://openairdocs.org/faa-place/AZ/Sun%20City)
- Owner type: Individual
- Owner's area on the map: 33.6058° N, 112.2841° W: Placed by OpenAirDocs at the center of ZIP code 85351, 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=107BW
- Page: https://openairdocs.org/aircraft/N107BW

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 (Blumer James Allen CHALLENGER II SPEC)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR13LA134](https://openairdocs.org/ntsb/WPR13LA134), Feb 26, 2013: Blumer Challenger II Spec (N107BW), Peoria, AZ, substantial damage. Probable cause: A cracked cooling fan housing, which led to a malfunction of the ignition system and a loss of engine power during the landing approach.

## 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 20130226003029A](https://openairdocs.org/incident/20130226003029A), Feb 26, 2013: Blumer James Allen CHALLENGER II SPEC (N107BW), Peoria, AZ, Substantial damage. Pilot was completing a third touch and go at airport P48, and while turning downwind noted the engine RPM decreasing. Pilot turned towards the airfield, and as…

## 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 Blumer James Allen CHALLENGER II SPEC aircraft: https://openairdocs.org/model/blumer-james-allen-challenger-ii-spec/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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