# N728NN: 1989 Quicksilver SPORT II

- Status: Valid registration
- Airframe: [Quicksilver SPORT II](https://openairdocs.org/model/quicksilver-sport-ii) (registry code 05901D6, 2 seats)
- Engine: [Rotax 503 series](https://openairdocs.org/engine/rotax-503-series) (registry code 55564)
- Serial number: 548
- Year built: 1989
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: September 22, 2007
- Certificate issued: August 5, 2023
- Expires: August 31, 2030
- Mode S code: A9C27D
- Registered owner: [Bordelon John J](https://openairdocs.org/faa-owner/BORDELON%20JOHN%20J)
- Location: [Jennings, LA](https://openairdocs.org/faa-place/LA/Jennings)
- Owner type: Individual
- Owner's area on the map: 30.2664° N, 92.6736° W: Placed by OpenAirDocs at the center of ZIP code 70546, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=728NN
- Page: https://openairdocs.org/aircraft/N728NN

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. The registry lists only the engine series, so ADs for every Rotax 503 model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Quicksilver SPORT II)

None in force.

### Matched by engine (Rotax 503 series)

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 CEN23LA422](https://openairdocs.org/ntsb/CEN23LA422), Sep 26, 2023: Quicksilver Sport II (N728NN), Welsh, LA, substantial damage. Probable cause: The pilot’s failure to maintain sufficient altitude from obstacles during the simulated landing approach which led to a collision with a fence and a building.

## 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 20230926010929A](https://openairdocs.org/incident/20230926010929A), Sep 26, 2023: Quicksilver SPORT II (N728NN), Welsh, LA, Substantial damage. Pilot was making approach to his property. He got too close to a fence on the property line and advanced the throttle. Engine did not respond as fast as he…

## 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 Quicksilver SPORT II aircraft: https://openairdocs.org/model/quicksilver-sport-ii/aircraft.md
- The Rotax 503 series engine: https://openairdocs.org/engine/rotax-503-series.md

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