T-4 vs L-39 Albatros
| Japanese training jet from the late 20th century, primarily used by the Japan Air Self-Defense Force for pilot instruction. | |
| Origin country | 🇯🇵 Japan |
| Category | Military Training Aircraft |
| Manufacturer | Kawasaki |
| First flight | 29 July 1985 |
| Year of introduction | 1988 |
| Number produced | 200 units |
| Average unit price | $-- million |
| Czech training jet, operational since the Cold War, deployed worldwide for various military aviation roles. | |
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| Origin country | 🇨🇿 Czech Republic |
| Category | Military Training Aircraft |
| Manufacturer | Aero |
| First flight | 4 November 1968 |
| Year of introduction | 1972 |
| Number produced | 2900 units |
| Average unit price | $1 million |
| Wing area | 21.0 m² ◉ |
| Wingspan | 9.9 m â—‰ |
| Height | 4.6 m â—‰ |
| Length | 13.0 m â—‰ |
| Maximum speed | -- km/h |
| Operational range | -- km |
| Service ceiling | 15,240 m â—‰ |
| Max. takeoff weight | 7,500 kg â—‰ |
| Empty weight | 3,790 kg â—‰ |
| Total thrust | 2 x 1,597 kgf â—‰ |
| Wing area | 18.8 m² ◉ |
| Wingspan | 9.5 m â—‰ |
| Height | 4.8 m â—‰ |
| Length | 12.1 m â—‰ |
| Maximum speed | 750 km/h |
| Operational range | 1,100 km |
| Service ceiling | 11,500 m â—‰ |
| Max. takeoff weight | 4,700 kg â—‰ |
| Empty weight | 3,459 kg â—‰ |
| Total thrust | 1 x 1,720 kgf â—‰ |
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