# N54271: 1985 Gross Bernard PIONEER II

- Status: Valid registration
- Airframe: [Gross Bernard PIONEER II](https://openairdocs.org/model/gross-bernard-pioneer-ii) (registry code 05675C3, 1 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 3
- Year built: 1985
- Type: Glider
- Engine type: None
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 10, 1985
- Certificate issued: February 8, 2001
- Expires: July 31, 2029
- Mode S code: A6E2C1
- Registered owner: [Wings Of History Air Museum](https://openairdocs.org/faa-owner/WINGS%20OF%20HISTORY%20AIR%20MUSEUM)
- Location: [San Martin, CA](https://openairdocs.org/faa-place/CA/San%20Martin)
- Owner type: Corporation
- Owner's area on the map: 37.0993° N, 121.5992° W: Placed by OpenAirDocs at the center of ZIP code 95046, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=54271
- Page: https://openairdocs.org/aircraft/N54271

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 (Gross Bernard PIONEER II)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N54271.

## FAA accident and incident reports

None matched to N54271.

## 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 Gross Bernard PIONEER II aircraft: https://openairdocs.org/model/gross-bernard-pioneer-ii/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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