E-4 NOAC vs EC-135 / EC-18 ARIA
| American advanced airborne command post, launched during the Cold War, extensively employed for national emergency operations. | |
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| Origin country | 🇺🇸 United States |
| Category | Military Special Mission Aircrafts |
| Manufacturer | Boeing |
| First flight | 1 January 1980 |
| Year introduced | 1974 |
| Number produced | 4 units |
| Average unit price | $223 million |
| American electronic surveillance and relay aircraft, involved largely in Cold War and Space Race-era operations. | |
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| Origin country | 🇺🇸 United States |
| Category | Military Special Mission Aircrafts |
| Manufacturer | Boeing |
| First flight | 1 January 1961 |
| Year introduced | 1968 |
| Number produced | 45 units |
| Average unit price | $150 million |
| Wing area | 510.0 m² ◉ |
| Wingspan | 59.7 m ◉ |
| Height | 19.3 m ◉ |
| Length | 70.5 m ◉ |
| Maximum speed | 969 km/h ◉ |
| Operational range | 12,600 km ◉ |
| Service ceiling | 13,716 m ◉ |
| Max. takeoff weight | 374,850 kg ◉ |
| Empty weight | 190,000 kg |
| Total thrust | 4 x 23,814 kgf ◉ |
| Wing area | 223.0 m² ◉ |
| Wingspan | 31.6 m ◉ |
| Height | 12.7 m ◉ |
| Length | 43.1 m ◉ |
| Maximum speed | 927 km/h ◉ |
| Operational range | 8,300 km ◉ |
| Service ceiling | 10,058 m ◉ |
| Max. takeoff weight | 136,304 kg ◉ |
| Empty weight | -- kg |
| Total thrust | 4 x 8,165 kgf ◉ |