Breezer Aircraft B400 vs Tomark Viper SD4
The Breezer B400 and Tomark SD-4 Viper are all-metal low-wing LSAs of similar mission.
Safety Record
Absolute counts scale with fleet size — the most-produced types log more events without being less safe. Compare the % fatal.
| NTSB (1982–now) | Breezer Aircraft B400 | Tomark Viper SD4 |
|---|---|---|
| All events | — | 1 |
| Serious | — | 0 |
| Fatal | — | 0 |
| Fatalities | — | 0 |
| % Fatal | — | 0% |
Full Specs Comparison
Swipe to see all specs
| Spec / Model | Breezer Aircraft B400 | Tomark Viper SD4 |
|---|---|---|
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| Price Range | — | $128,546 – $179,000 |
| Category | — | Light Sport |
| Model Specifications | ||
| Seats | 2 | — |
| Horsepower | 100 HP | — |
| Cruise Speed | 110 kts (204 km/h) | — |
| Range | 430 nm (796 km) | — |
| Service Ceiling | 14,000 ft (4,267 m) | — |
| Max Gross Weight | 1,323 lbs (600 kg) | — |
| Useful Load | 550 lbs (249 kg) | — |
| Fuel Burn | 5.5 GPH (21 L/h) | — |
| Engines | 1 x Piston | — |
Frequently Asked Questions
Which is better, Breezer Aircraft B400 or Tomark Viper SD4?
It depends on your mission and budget.
The B400 cruises at 110 kts with 430 nm range.
Review the specs table above to find which fits your flying profile.
How do prices compare?
Tomark Viper SD4: from $128,546.
Prices vary by year, hours, avionics, and condition. Always get a pre-buy inspection.
What's the difference between Breezer Aircraft B400 and Tomark Viper SD4?
Which is cheaper to operate per hour?
Variable cost includes fuel, reserves and overhaul accruals. Annual fixed costs (hangar, insurance, annual inspection) add to the total.
Which has more seats and useful load?
B400: 2 seats / 550 lb useful load.
Useful load = max gross weight minus empty weight; it determines how much fuel plus payload you can carry.
How does maintenance compare — TBO and overhaul cost?
Reaching the time-between-overhaul (TBO) triggers a mandatory engine/airframe rebuild that affects resale value.
Disclaimer: All prices and cost estimates are from third-party sources for informational purposes only. Always obtain professional appraisal and inspection before purchase.
Prices updated daily · Data: FAA Registry, NTSB · About our data