Tomark Aero Cz Sro VIPER SD-4
20 on the U.S. register. Built from 2009 to 2025; half of them date from 2023 or earlier. Florida has the most (6). 75% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are never named here.
About the VIPER SD-4 from the FAA's model table
- Type
- Fixed-wing, single engine · Piston singles
- Power
- Four-cycle piston, 1 engine
- Common engines
- Rotax 912Uls2 (12), Rotax 912Uls Series (3), Rotax 914Uls (1)
- Seats
- 2
- Maker on the register
- Tomark Aero Cz Sro
- Registered
- earliest certificate April 27, 2010; newest August 28, 2026
Where they are owner's state
Florida6Wyoming3Delaware3Idaho2Washington1Texas1Nevada1Missouri1Illinois1Colorado1
Who owns them registrant type
LLC9 (45%)Non-citizen corporation5 (25%)Individual5 (25%)Corporation1 (5%)
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| VIPER SD-4 | 20 | 2009 to 2025 | 100.0% |
When they were built by decade · 3 with no year on file
Registrations by year certificates issued since 2010, including changes of owner · 2026 is the year so far
Registration status
Valid18 (90%)Reports overdue1 (5%)Pending1 (5%)
Airworthiness certificate class
Light sport17 (85%)None on file2 (10%)Experimental1 (5%)
Biggest operators companies, schools and clubs
Eagle International Aircraft INC5Tomark Aero USA LLC1Salt Meadow LLC1Pupa285 LLC1Piston Aviation LLC1Paige Aviation LLC1November Sky LLC1N411Ea LLC1Management Ranch LLC1International Air Services INC Trustee1Cinca Aircrafts LLC1
Fleet pages: Eagle International Aircraft INC · Piston Aviation LLC · International Air Services INC Trustee
Accident history NTSB records · 0 cases since 1982, 0 fatal
No NTSB accident or incident records match this family's versions. Each aircraft's own page also shows its record.
Questions people ask answers refresh every morning
How many Tomark Aero Cz Sro VIPER SD-4 aircraft are registered in the U.S.?
20 as of October 2, 2026, counting 1 version the FAA records separately.
Which state has the most Tomark Aero Cz Sro VIPER SD-4s?
Florida, with 6.
Who owns the Tomark Aero Cz Sro VIPER SD-4?
75% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are never named on this site.
Aircraft newest certificates first · 20
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N651EA | Tomark Aero Cz Sro VIPER SD-4 |
Eagle International Aircraft INC Fort Lauderdale, Florida |
None on file | 2026-08-28 | Valid |
| N447EA | Tomark Aero Cz Sro VIPER SD-4 |
Management Ranch LLC Sheridan, Wyoming |
Light sport | 2026-08-26 | Valid |
| N652EA | Tomark Aero Cz Sro VIPER SD-4 |
Eagle International Aircraft INC Fort Lauderdale, Florida |
None on file | 2026-08-06 | Valid |
| N478EA | Tomark Aero Cz Sro VIPER SD-4 |
Individual owner Idaho |
Light sport | 2026-05-26 | Valid |
| N450EA | Tomark Aero Cz Sro VIPER SD-4 |
International Air Services INC Trustee Carson City, Nevada |
Light sport | 2026-05-07 | Valid |
| N874EA | Tomark Aero Cz Sro VIPER SD-4 |
November Sky LLC Sheridan, Wyoming |
Light sport | 2026-04-23 | Valid |
| N973EA | Tomark Aero Cz Sro VIPER SD-4 |
Eagle International Aircraft INC Fort Lauderdale, Florida |
Light sport | 2026-01-20 | Valid |
| N485EA | Tomark Aero Cz Sro VIPER SD-4 |
Pupa285 LLC Dover, Delaware |
Light sport | 2025-12-20 | Valid |
| N411EA | Tomark Aero Cz Sro VIPER SD-4 |
N411Ea LLC Sheridan, Wyoming |
Light sport | 2025-12-15 | Valid |
| N881EA | Tomark Aero Cz Sro VIPER SD-4 |
Eagle International Aircraft INC Fort Lauderdale, Florida |
Light sport | 2025-11-21 | Reports overdue |
| N848EA | Tomark Aero Cz Sro VIPER SD-4 |
Eagle International Aircraft INC Fort Lauderdale, Florida |
Light sport | 2025-11-13 | Valid |
| N854EA | Tomark Aero Cz Sro VIPER SD-4 |
Paige Aviation LLC Wilmington, Delaware |
Light sport | 2025-10-30 | Valid |
| N802EA | Tomark Aero Cz Sro VIPER SD-4 |
Cinca Aircrafts LLC Merritt Island, Florida |
Light sport | 2025-03-25 | Valid |
| N814EA | Tomark Aero Cz Sro VIPER SD-4 |
Individual owner Colorado |
Light sport | 2024-11-25 | Valid |
| N374EA | Tomark Aero Cz Sro VIPER SD-4 |
Piston Aviation LLC Saint Charles, Missouri |
Light sport | 2023-12-23 | Valid |
| N359EA | Tomark Aero Cz Sro VIPER SD-4 |
Individual owner Illinois |
Light sport | 2022-11-12 | Valid |
| N205JR | Tomark Aero Cz Sro VIPER SD-4 |
Salt Meadow LLC Middletown, Delaware |
Light sport | 2021-10-18 | Valid |
| N311EA | Tomark Aero Cz Sro VIPER SD-4 |
Individual owner Washington |
Light sport | 2020-02-26 | Valid |
| N613TK | Tomark Aero Cz Sro VIPER SD-4 |
Tomark Aero USA LLC Frisco, Texas |
Experimental | 2010-04-27 | Valid |
| N875EA | Tomark Aero Cz Sro VIPER SD-4 |
Individual owner Idaho |
Light sport | Pending |