# N5XK: 1996 Keller Fred H PROSPECTOR, registration cancelled 2005-11-01

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 1, 2005
- Status when cancelled: Triennial form not returned
- Airframe: [Keller Fred H PROSPECTOR](https://openairdocs.org/model/keller-fred-h-prospector) (registry code 0563012)
- Engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508)
- Data sheets: [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Serial number: 002
- Year built: 1996
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 10, 1996
- Certificate issued: September 25, 1996
- Last registry action: September 20, 2005
- Mode S code: A63755
- Owners when cancelled: [Kuffel Betty J](https://openairdocs.org/faa-owner/KUFFEL%20BETTY%20J), [Kuffel Thomas C](https://openairdocs.org/faa-owner/KUFFEL%20THOMAS%20C)
- Location: [Whitefish, MT](https://openairdocs.org/faa-place/MT/Whitefish)
- Owner type: Co-owned
- Owner's area on the map: 48.4269° N, 114.4940° W: Placed by OpenAirDocs at the center of ZIP code 59937, within about 10 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5XK
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5XK
- Page: https://openairdocs.org/deregistered/N5XK-2005-11-01

From the FAA registry file of October 29, 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 Keller Fred H PROSPECTOR: https://openairdocs.org/model/keller-fred-h-prospector.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 SEA04LA071](https://openairdocs.org/ntsb/SEA04LA071), Apr 17, 2004: Keller Prospector FK1 (N5XK), Gibbonsville, ID, substantial damage. Probable cause: The pilot's failure to apply carburetor heat in icing conditions which resulted in a loss of engine power while in cruise flight. Factors contributing to the accident are unsuitable terrain for an…

## 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 20040417009189A](https://openairdocs.org/incident/20040417009189A), Apr 17, 2004: Amtr PROSPECTOR (N5XK), Gibbonsville, ID, Destroyed. (-23) On 04-17-04 at 1230 pm N5XK with two persons aboard collided into the forested terrain near lost trail pass, coming to rest .5 miles south of the Idaho…

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