# N5574A: 1980 Koopsen Leon A MILLER SPORT WMII, registration cancelled 2013-08-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 20, 2013
- Status when cancelled: Sale reported, canceled
- Airframe: [Koopsen Leon A MILLER SPORT WMII](https://openairdocs.org/model/koopsen-leon-a-miller-sport-wmii) (registry code 05655Z6)
- Engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003)
- Data sheets: [TCDS E-205](https://openairdocs.org/tcds/E-205) (OpenAirDocs)
- Serial number: 10
- Year built: 1980
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 7, 1980
- Last registry action: December 14, 1998
- Mode S code: A71C51
- Location: [Chattanooga, TN](https://openairdocs.org/faa-place/TN/Chattanooga)
- Owner type: Individual
- Owner's area on the map: 35.0456° N, 85.3097° W: Placed by OpenAirDocs: center of Chattanooga, TN, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5574A
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5574A
- Page: https://openairdocs.org/deregistered/N5574A-2013-08-20

From the FAA registry file of November 3, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Koopsen Leon A MILLER SPORT WMII: https://openairdocs.org/model/koopsen-leon-a-miller-sport-wmii.md

## 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 CHI88DEM06](https://openairdocs.org/ntsb/CHI88DEM06), Jun 10, 1988: Koopsen Miller Sport II (N5574A), Lake City, MI, substantial damage

## 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 19880610025509A](https://openairdocs.org/incident/19880610025509A), Jun 10, 1988: Amtr MILLERA (N5574A), Lake City, MI, Substantial damage. Engine lost power on final. Plane hit trees before main impact. Found throttle linkage disconnected at carburetor.

## Other aircraft with N5574A

- [Cancelled 1977-10-18](https://openairdocs.org/deregistered/N5574A-1977-10-18): Brennan-Fokker D-VII, S/N 1404, built 1957. Exported to Canada. Owner: [Brennan Edward J Jr](https://openairdocs.org/faa-owner/BRENNAN%20EDWARD%20J%20JR), [North Olmstead, OH](https://openairdocs.org/faa-place/OH/North%20Olmstead)

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