# N411EA: 2023 Tomark Aero CZ Sro VIPER SD-4

- Status: Valid registration
- Airframe: [Tomark Aero CZ Sro VIPER SD-4](https://openairdocs.org/model/tomark-aero-cz-sro-viper-sd-4) (registry code 060007X, 2 seats)
- Engine: [Rotax 912ULS2](https://openairdocs.org/engine/rotax-912uls2) (registry code 55599)
- Serial number: 41118
- Year built: 2023
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Light sport, airplane
- Airworthiness date: December 9, 2023
- Certificate issued: December 15, 2025
- Expires: December 31, 2032
- Mode S code: A4D83C
- Registered owner: [N411ea LLC](https://openairdocs.org/faa-owner/N411EA%20LLC)
- Location: [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan)
- Owner type: LLC
- Owner's area on the map: 44.8325° N, 106.8963° W: Placed by OpenAirDocs at the center of ZIP code 82801, within about 13 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=411EA
- Page: https://openairdocs.org/aircraft/N411EA

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 (Tomark Aero CZ Sro VIPER SD-4)

None in force.

### Matched by engine (Rotax 912ULS2)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N411EA.

## FAA accident and incident reports

None matched to N411EA.

## 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 N411EA

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N411EA before.

- [Cancelled 2002-10-02](https://openairdocs.org/deregistered/N411EA-2002-10-02): Mcdonnell Douglas DC-9-51, S/N 47732, built 1977. Exported to Uganda. Owner: [Boeing Capital Loan Corp](https://openairdocs.org/faa-owner/BOEING%20CAPITAL%20LOAN%20CORP), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas)

## Related

- Other Tomark Aero CZ Sro VIPER SD-4 aircraft: https://openairdocs.org/model/tomark-aero-cz-sro-viper-sd-4/aircraft.md
- The Rotax 912ULS2 engine: https://openairdocs.org/engine/rotax-912uls2.md

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