# Tomark Aero CZ Sro VIPER SD-4

- Type: Aircraft model (FAA registry)
- Registry code: 060007X
- Manufacturer (registry): TOMARK AERO CZ SRO
- Model: VIPER SD-4
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · 4 cycle
- Seats: 2
- Weight class: Up to 12,499 lb
- Certification: Light sport
- Registered aircraft: 20
- Page: https://openairdocs.org/model/tomark-aero-cz-sro-viper-sd-4

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (20)

- [N205JR](https://openairdocs.org/aircraft/N205JR): [Salt Meadow LLC](https://openairdocs.org/faa-owner/SALT%20MEADOW%20LLC), [Middletown, DE](https://openairdocs.org/faa-place/DE/Middletown), S/N 0099
- [N311EA](https://openairdocs.org/aircraft/N311EA): [Gibson Brock E](https://openairdocs.org/faa-owner/GIBSON%20BROCK%20E), [Vancouver, WA](https://openairdocs.org/faa-place/WA/Vancouver), built 2017, S/N 0100
- [N359EA](https://openairdocs.org/aircraft/N359EA): [Mcnelis Thomas](https://openairdocs.org/faa-owner/MCNELIS%20THOMAS), [Yorkville, IL](https://openairdocs.org/faa-place/IL/Yorkville), built 2022, S/N 35900
- [N374EA](https://openairdocs.org/aircraft/N374EA): [Management Ranch LLC](https://openairdocs.org/faa-owner/MANAGEMENT%20RANCH%20LLC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 2023, S/N 37473
- [N411EA](https://openairdocs.org/aircraft/N411EA): [N411ea LLC](https://openairdocs.org/faa-owner/N411EA%20LLC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 2023, S/N 41118
- [N447EA](https://openairdocs.org/aircraft/N447EA): [Management Ranch LLC](https://openairdocs.org/faa-owner/MANAGEMENT%20RANCH%20LLC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 2023, S/N 41147
- [N450EA](https://openairdocs.org/aircraft/N450EA): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 2017, S/N 22054
- [N478EA](https://openairdocs.org/aircraft/N478EA): [Hixson Robert](https://openairdocs.org/faa-owner/HIXSON%20ROBERT), [Hayden, ID](https://openairdocs.org/faa-place/ID/Hayden), built 2023, S/N 39478
- [N485EA](https://openairdocs.org/aircraft/N485EA): [Pupa285 LLC](https://openairdocs.org/faa-owner/PUPA285%20LLC), [Dover, DE](https://openairdocs.org/faa-place/DE/Dover), built 2024, S/N 41584
- [N613TK](https://openairdocs.org/aircraft/N613TK): [Tomark Aero USA LLC](https://openairdocs.org/faa-owner/TOMARK%20AERO%20USA%20LLC), [Frisco, TX](https://openairdocs.org/faa-place/TX/Frisco), built 2009, S/N 0008
- [N651EA](https://openairdocs.org/aircraft/N651EA): [Eagle International Aircraft Inc](https://openairdocs.org/faa-owner/EAGLE%20INTERNATIONAL%20AIRCRAFT%20INC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), S/N 42561
- [N652EA](https://openairdocs.org/aircraft/N652EA): [Eagle International Aircraft Inc](https://openairdocs.org/faa-owner/EAGLE%20INTERNATIONAL%20AIRCRAFT%20INC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), S/N 42562
- [N802EA](https://openairdocs.org/aircraft/N802EA): [Cinca Aircrafts LLC](https://openairdocs.org/faa-owner/CINCA%20AIRCRAFTS%20LLC), [Merritt Island, FL](https://openairdocs.org/faa-place/FL/Merritt%20Island), built 2024, S/N 41802
- [N814EA](https://openairdocs.org/aircraft/N814EA): [Bruehl Matthew L](https://openairdocs.org/faa-owner/BRUEHL%20MATTHEW%20L), [Greeley, CO](https://openairdocs.org/faa-place/CO/Greeley), built 2024, S/N 41803
- [N848EA](https://openairdocs.org/aircraft/N848EA): [Eagle International Aircraft Inc](https://openairdocs.org/faa-owner/EAGLE%20INTERNATIONAL%20AIRCRAFT%20INC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), built 2025, S/N 41880
- [N854EA](https://openairdocs.org/aircraft/N854EA): [Paige Aviation LLC](https://openairdocs.org/faa-owner/PAIGE%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2023, S/N 40458
- [N874EA](https://openairdocs.org/aircraft/N874EA): [November Sky LLC](https://openairdocs.org/faa-owner/NOVEMBER%20SKY%20LLC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 2025, S/N NOVEMBER SKY
- [N875EA](https://openairdocs.org/aircraft/N875EA): [Post Falls, ID](https://openairdocs.org/faa-place/ID/Post%20Falls), built 2025, S/N 41875, Registration pending
- [N881EA](https://openairdocs.org/aircraft/N881EA): [Eagle International Aircraft Inc](https://openairdocs.org/faa-owner/EAGLE%20INTERNATIONAL%20AIRCRAFT%20INC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), built 2025, S/N 41881, Non-citizen corporation, flight hours not reported
- [N973EA](https://openairdocs.org/aircraft/N973EA): [Eagle International Aircraft Inc](https://openairdocs.org/faa-owner/EAGLE%20INTERNATIONAL%20AIRCRAFT%20INC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), built 2022, S/N 37009

## NTSB investigations

None matched to aircraft with this model.

## 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.

- [Incident 20250912017969I](https://openairdocs.org/incident/20250912017969I), Sep 12, 2025: Tomark Aero Cz Sro VIPER SD-4 (N447EA), Creve Coeur, MO, Minor damage. A student pilot, on solo flight, was practicing take off and landings. During the flare to land, the aircraft began to porpoise resulting in a hard landing.…

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