Specifications

Primary Function : Heavy bomber

Contractor : Boeing Military Airplane Co.

Power Plant : Eight Pratt & Whitney engines TF33-P-3/103 turbofan

Thrust : Each engine up to 17,000 pounds (7,650 kilograms)

Length : 159 feet, 4 inches (48.5 meters)

Height : 40 feet, 8 inches (12.4 meters)

Wingspan : 185 feet (56.4 meters)

Speed : 650 miles per hour (Mach 0.86)

Ceiling : 50,000 feet (15,151.5 meters)

Weight : Approximately 185,000 pounds empty (83,250 kilograms)

Maximum Takeoff Weight : 488,000 pounds (219,600 kilograms)

Range : Unrefueled 8,800 miles (7,652 nautical miles)

Armament : Approximately 70,000 pounds (31,500 kilograms) mixed ordnance -- bombs, mines and missiles.

Crew : Five (aircraft commander, pilot, radar navigator, navigator and electronic warfare officer)

Accommodations : Six ejection seats

Unit Cost : $30 million

Date Deployed : February 1955

Inventory : 56 combat-coded Active force, 94; ANG, 0; Reserve, 9