# N821A: 2020 William Martin Huber SEAWIND 3000

- Status: Valid registration
- Airframe: [William Martin Huber SEAWIND 3000](https://openairdocs.org/model/william-martin-huber-seawind-3000) (registry code 056387Q, 4 seats)
- Engine: [Lycoming YIO-540 SERIE](https://openairdocs.org/engine/lycoming-yio-540-serie) (registry code 41779)
- Serial number: 152
- Year built: 2020
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sna Inc SEAWIND 3000
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 15, 2020
- Certificate issued: May 20, 2020
- Expires: May 31, 2027
- Mode S code: AB3492
- Registered owner: [Major Equip Corp](https://openairdocs.org/faa-owner/MAJOR%20EQUIP%20CORP)
- Location: [Saint Louis, MO](https://openairdocs.org/faa-place/MO/Saint%20Louis)
- Owner type: Corporation
- Owner's area on the map: 38.6761° N, 90.3774° W: Placed by OpenAirDocs at the center of ZIP code 63132, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=821A
- Page: https://openairdocs.org/aircraft/N821A

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 (William Martin Huber SEAWIND 3000)

None in force.

### Matched by engine (Lycoming YIO-540 SERIE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N821A.

## FAA accident and incident reports

None matched to N821A.

## 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.

## Earlier aircraft with N821A

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N821A before.

- [Cancelled 2012-04-19](https://openairdocs.org/deregistered/N821A-2012-04-19): Sikorsky S-76C, S/N 760821, built 2011. Exported to Indonesia. Owner: [Wells Fargo Bank Northwest Na Trustee](https://openairdocs.org/faa-owner/WELLS%20FARGO%20BANK%20NORTHWEST%20NA%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N821A-undated): Piper PA-22, S/N 22124. Triennial form not returned

## Related

- Other William Martin Huber SEAWIND 3000 aircraft: https://openairdocs.org/model/william-martin-huber-seawind-3000/aircraft.md
- The Lycoming YIO-540 SERIE engine: https://openairdocs.org/engine/lycoming-yio-540-serie.md

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