KC-135 Stratotanker

Primary Function: Aerial refueling and airlift
Prime Contractor: The Boeing Company
Power Plant: KC-135R/T, CFM International CFM-56 turbofan engines; KC-135E, Pratt and Whitney TF-33-PW-102 turbofan engines
Thrust: KC-135R, 21,634 pounds each engine; KC-135E, 18,000 pounds each engine
Wingspan: 130 feet, 10 inches (39.88 meters)
Length: 136 feet, 3 inches (41.53 meters)
Height: 41 feet, 8 inches (12.7 meters)
Speed: 530 miles per hour at 30,000 feet (9,144 meters)
Ceiling: 50,000 feet (15,240 meters)
Range: 1,500 miles (2,419 kilometers) with 150,000 pounds (68,039 kilograms) of transfer fuel; ferry mission, up to 11,015 miles (17,766 kilometers)
Maximum Takeoff Weight: 322,500 pounds (146,285 kilograms)
Maximum Transfer Fuel Load: 200,000 pounds (90,719 kilograms)
Maximum Cargo Capability: 83,000 pounds (37,648 kilograms), 37 passengers
Pallet Positions: 6
Crew: Four: pilot, co-pilot, navigator, boom operator. Aircraft equipped with PACER CRAG do not have a navigator on most missions. The Air Force procured a limited number of navigator suites that can be installed for unique missions.
Unit Cost: $39.6 million (FY98 constant dollars)
Date Deployed: August 1956
Inventory: Active duty, 253; Air National Guard, 222; Air Force Reserve, 70

KC-10 Extender

Primary Function: Aerial tanker and transport
Prime Contractor: The Boeing Company
Power Plant: Three General Electric CF6-50C2 turbofans
Thrust: 52,500 pounds (23,625 kilograms), each engine
Length: 181 feet, 7 inches (54.4 meters)
Height: 58 feet, 1 inch (17.4 meters)
Wingspan: 165 feet, 4.5 inches (50 meters)
Speed: 619 mph (Mach 0.825)
Ceiling: 42,000 feet (12,727 meters)
Maximum Takeoff Weight: 590,000 pounds (265,500 kilograms)
Range: 4,400 miles (3,800 nautical miles) with cargo; 11,500 miles (10,000 nautical miles) without cargo
Maximum Cargo Payload: 170,000 pounds (76,560 kilograms)
Pallet Positions: 27
Maximum Fuel Load: 356,000 pounds (160,200 kilograms)
Crew: Four (aircraft commander, pilot, flight engineer and boom operator)
Unit Cost: $88.4 million (FY 98 constant dollars)
Date Deployed: March 1981
Inventory: Active force, 59; ANG, 0; Reserve, 0