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Pick up to four aircraft. The best value in each row is highlighted.
Northrop Corporation X-21
Military
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Boeing EC-135
Military
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|---|---|---|
| Quick facts | ||
| Manufacturer | Northrop Corporation | Boeing |
| Type | Other military aircraft | Other military aircraft |
| Origin | — | 🇺🇸 United States |
| First flight | 1963 | 1961 |
| Status | Retired | Retired |
| Units built | 2 | — |
| Unit cost | — | — |
| Dimensions | ||
| Length | 22.94 m | — |
| Wingspan | 28.51 m | — |
| Height | 7.80 m | — |
At a glance
Figures are compiled from public sources and may be approximate; they can vary by variant and configuration.