The Lockheed EC-121 Warning Star was a airborne early warning radar surveillance aircraft based on the Lockheed Constellation and consequently nicknamed the "Connie" by it's aircrews. 232 EC-121's were produced and used by the USAF and USN from 1955 to 1978. Lockheed EC-121D Warning Star Specifications: - Crew: Normally 6 flight crew and 11-25 radar crew
- Length: 113 ft 7 in (34.62 m)
- Wingspan: 123 ft 0 in (37.49 m)
- Height: 24 ft 9 in (7.54 m)
- Empty weight: 69,210 lb (31,387 kg)
- Max takeoff weight: 143,000 lb (65,000 kg)
- Engines: Four 3,400 hp (2,536 kW) Wright R-3350-34 18-cylinder supercharged radial engines
- Maximum speed: 299 mph (260 kt, 481 km/h)
- Cruise speed: 255 mph (221.6 kt, 410 km/h)
- Range: 4,250 mi (3,700 nm, 6,843 km)
- Service ceiling 25,000 ft (7,620 m)
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