Credit
Aero Vodochody · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified
FORCETALLY
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At a glance
Measured figures
L-39 Skyfox · Length
Single source11.83 m (38 ft 10 in)[source]
G 115E · Length
Single sourceConfiguration
| Specification | Aero L-39 Skyfox | Grob G 115 |
|---|---|---|
| Other name | L-39NG[source] | — |
| Type | Advanced jet trainer Light combat aircraft[source] | Basic trainer[source] |
| National origin | Czech Republic[source] | — |
| Manufacturer | Aero Vodochody[source] | Grob Aircraft[source] |
| Status | In service[source] |
7.79 m (25 ft 7 in)[source]
G 115E · Height
Single source2.82 m (9 ft 3 in)[source]
Empty; L-39 Skyfox · Empty weight
Single sourceMaximum take-off; L-39 Skyfox · Rear view of a L-39 Skyfox and its Williams FJ44 engine
Single source3,100 kg (6,834 lb)[source]
5,800 kg (12,787 lb) Rear view of a L-39 Skyfox and its Williams FJ44 engine[source]
Empty; G 115E · Empty weight
Single sourceMaximum take-off; G 115E · Max takeoff weight
Single sourceMaximum; L-39 Skyfox · TAS at 6,000 m (20,000 ft)
Single source900 km/h (560 mph, 490 kn) TAS at 6,000 m (20,000 ft)[source]
G 115E · 1 × Lycoming AEIO-360-B1F/B 4-cylinder air-cooled horizontally-opposed piston engine
Single source1 × Lycoming AEIO-360-B1F/B 4-cylinder air-cooled horizontally-opposed piston engine, 130 kW (180 hp)[source]
L-39 Skyfox · 1 × Williams International FJ44-4M turbofan engine thrust
Single source1 × Williams International FJ44-4M turbofan engine, 16.89 kN (3,800 lbf) thrust[source]
L-39 Skyfox · four hours and internal fuel
Single sourcefour hours and 30 minutes (internal fuel)[source]
G 115E · Wing area
Single source12.21 m 2 (131.4 sq ft)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
active[source] |
| Primary users | Vietnam People's Air Force Hungarian Air Force Flight Training Center Pardubice[source] | Royal Air Force Egyptian Air Force Finnish Air Force Royal Navy Army Air Corps (UK)[source] |
|---|
| Number built | ~ 24 (2025)[source] | — |
|---|
| Manufactured | 2015–2024 (developmental) 2024 onwards (serial)[source] | 1985–present[source] |
|---|
| First flight | 14 September 2015 (L-39CW) 22 December 2018 (L-39NG)[source] | November 1985[source] |
|---|
| Developed from | Aero L-39 Albatros[source] | — |
|---|
| Airfoil | NACA 64A012[source] | Eppler 696[source] |
|---|
| Hardpoints | Up to 1,640 kg (3,616 lb) of stores on five external hardpoints[source] | — |
|---|
| Introduction date | — | 1999[source] |
|---|
| Fuel capacity | — | 143 L (31 imp gal; 38 US gal) usable[source] |
|---|
| Aspect ratio | — | 8.2:1[source] |
|---|
| Propellers | — | 3-bladed Hoffmann HO-V343K-V/183GY Constant-speed propeller , 1.83 m (6 ft 0 in) diameter[source] |
|---|
| Stall speed | — | 91 km/h (57 mph, 49 kn) (60 degree flap)[source] |
|---|
| Never exceed speed | — | 341 km/h (212 mph, 184 kn)[source] |
|---|
| g limits | — | + 6.0/ - 3.0[source] |
|---|
| Country of origin | — | Deutschland[source]Country of design · Entwurfsland |
|---|