# N4394J: 2007 Quicksilver GT-400

- Status: Valid registration
- Airframe: [Quicksilver GT-400](https://openairdocs.org/model/quicksilver-gt-400) (registry code 05901P8, 1 seats)
- Engine: [Rotax 503 series](https://openairdocs.org/engine/rotax-503-series) (registry code 55564)
- Serial number: GT 2801204
- Year built: 2007
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: January 8, 2008
- Certificate issued: October 24, 2012
- Expires: October 31, 2028
- Mode S code: A5477A
- Registered owner: [Langer Paul Hubert](https://openairdocs.org/faa-owner/LANGER%20PAUL%20HUBERT)
- Location: [Gainesville, TX](https://openairdocs.org/faa-place/TX/Gainesville)
- Owner type: Individual
- Owner's area on the map: 33.6616° N, 97.1764° W: Placed by OpenAirDocs at the center of ZIP code 76240, within about 11 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4394J
- Page: https://openairdocs.org/aircraft/N4394J

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 GT-400)

None in force.

### Matched by engine (Rotax 503 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4394J.

## NTSB investigations on N4394J not matched to an aircraft (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 CHI86FEM13](https://openairdocs.org/ntsb/CHI86FEM13), Aug 4, 1986: Piper PA-28-140 (N4394J), Menominee, MI, substantial damage

## FAA accident and incident reports

None matched to N4394J.

## Reports on N4394J not matched to an aircraft (1)

They name N4394J, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Accident 19860804037299A](https://openairdocs.org/incident/19860804037299A), Aug 4, 1986: Piper STCPA28 (N4394J), Menominee, MI, Substantial damage. Engine lost power on takeoff. Aircraft ran off the end of the runway into a ditch. Worn and fouled mags and plugs.

## 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 GT-400 aircraft: https://openairdocs.org/model/quicksilver-gt-400/aircraft.md
- The Rotax 503 series engine: https://openairdocs.org/engine/rotax-503-series.md

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