# N504BT: 2008 Jonker Sailplanes CC JS 1B, registration cancelled 2010-03-03

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 3, 2010
- Exported to: South Africa
- Status when cancelled: Valid registration
- Airframe: [Jonker Sailplanes CC JS 1B](https://openairdocs.org/model/jonker-sailplanes-cc-js-1b) (registry code 056280S)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Serial number: 1B-004
- Year built: 2008
- Type of aircraft: Glider
- Engine type: None
- Airworthiness: Experimental, exhibition, racing
- Airworthiness date: August 20, 2009
- Certificate issued: August 19, 2009
- Last registry action: August 19, 2009
- Mode S code: A648F7
- Owner when cancelled: [Tate Barton L](https://openairdocs.org/faa-owner/TATE%20BARTON%20L)
- Location: [Moriarty, NM](https://openairdocs.org/faa-place/NM/Moriarty)
- Owner type: Individual
- Owner's area on the map: 34.9520° N, 105.9094° W: Placed by OpenAirDocs at the center of ZIP code 87035, within about 10 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N504BT
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=504BT
- Page: https://openairdocs.org/deregistered/N504BT-2010-03-03

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 Jonker Sailplanes CC JS 1B: https://openairdocs.org/model/jonker-sailplanes-cc-js-1b.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 ERA09CA479](https://openairdocs.org/ntsb/ERA09CA479), Aug 23, 2009: Jonker JS-1B (N504BT), Tullahoma, TN, substantial damage. Probable cause: The pilot's failure to maintain a proper glidepath while on approach, resulting in landing short of the runway.

## 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 20090822016499A](https://openairdocs.org/incident/20090822016499A), Aug 22, 2009: Jonker JS1B (N504BT), Tullahoma, TN, Substantial damage. (-23) Aircraft was not maintained at a sufficient altitude, during turn from base to final, to overcome apparent high negative lift experienced on final. Pilot…

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