Grob G109 vs Schleicher ASK 21 Mi
Live Market Snapshot
Current asking-price market, aggregated across multiple marketplaces · refreshed daily
Grob G109
- For sale now
- 10
- Model years available
- 1980–1990
Schleicher ASK 21 Mi
No active listings right now.
Live data from AeroGurus, aggregated daily across the used-aircraft market. Figures are current asking prices, not appraisals — confirm with a pre-buy inspection.
Full Specs Comparison
Swipe to see all specs
| Spec / Model | Grob G109 | Schleicher Ask 21 Mi |
|---|---|---|
|
Median $48,887
|
|
|
| Price Range | $40,739 – $64,645 | $107,721 – $189,205 |
| Category | — | Gliders |
| Model Specifications | ||
| Seats | 2 | — |
| Horsepower | 95 HP | — |
| Cruise Speed | 100 kts (185 km/h) | — |
| Range | 430 nm (796 km) | — |
| Service Ceiling | 16,000 ft (4,877 m) | — |
| Useful Load | 500 lbs (227 kg) | — |
| Fuel Burn | 5.0 GPH (19 L/h) | — |
| Engines | 1 x Piston | — |
Frequently Asked Questions
Which is better, Grob G109 or Schleicher Ask 21 Mi?
It depends on your mission and budget.
The G109 cruises at 100 kts with 430 nm range.
Review the specs table above to find which fits your flying profile.
How do prices compare?
Schleicher Ask 21 Mi: from $189,205.
Prices vary by year, hours, avionics, and condition. Always get a pre-buy inspection.
What's the difference between Grob G109 and Schleicher ASK 21 Mi?
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?
G109: 2 seats / 500 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