# N304AB: 2008 HPH Spol Sro Kutna Hora GLASFLUGEL 304S

- Status: Valid registration
- Airframe: [HPH Spol Sro Kutna Hora GLASFLUGEL 304S](https://openairdocs.org/model/hph-spol-sro-kutna-hora-glasflugel-304s) (registry code 05627DY, 1 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Serial number: 004-S
- Year built: 2008
- Type: Glider
- Engine type: None
- Airworthiness: Experimental, exhibition, racing
- Airworthiness date: August 11, 2008
- Certificate issued: March 27, 2025
- Expires: March 31, 2032
- Mode S code: A32E30
- Registered owner: [Wallis Ronald M](https://openairdocs.org/faa-owner/WALLIS%20RONALD%20M)
- Location: [Lago Vista, TX](https://openairdocs.org/faa-place/TX/Lago%20Vista)
- Owner type: Individual
- Owner's area on the map: 30.4502° N, 97.9715° W: Placed by OpenAirDocs at the center of ZIP code 78645, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=304AB
- Page: https://openairdocs.org/aircraft/N304AB

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.

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

### Matched by airframe (HPH Spol Sro Kutna Hora GLASFLUGEL 304S)

None in force.

### Matched by engine (NONE)

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 CEN21LA346](https://openairdocs.org/ntsb/CEN21LA346), Jul 30, 2021: HpH, Spol. S.R.O. Glasflügel 304S (N304AB), Briggs, TX, substantial damage. Probable cause: The overstress fracture of the elevator control tube due to reduced wall thickness from water intrusion and subsequent corrosion. Contributing to the accident was the lack of a drain hole at the…

## 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 20210730013369A](https://openairdocs.org/incident/20210730013369A), Jul 30, 2021: Hph Spol Sro Kutna Hora GLASFLUGEL 304S (N304AB), Briggs, TX, Substantial damage. On July 30, 2021, at approximately 1440 (CDT) N304AB , an expiremental Hph, spol. S.r.o glasflÜgel glider serial number 304S departed under tow from fault line…

## 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 HPH Spol Sro Kutna Hora GLASFLUGEL 304S aircraft: https://openairdocs.org/model/hph-spol-sro-kutna-hora-glasflugel-304s/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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