The Boeing-built C-40A Clipper flies the Navy Unique Fleet Essential Airlift mission, providing high-priority cargo and passenger airlift for the U.S. Navy fleet worldwide. The Marines Corps uses a variant on the A for a similar mission, and the United States Air Force uses the C-40B and C-40C. Members of the C-40 family provide their operators with performance, low-cost operations and reliability for their support missions. C-40 Quick Facts The U.S. Naval Reserve operates and maintains the aircraft at four air bases: NAS JRB Fort Worth VR-59 NAS Jacksonville VR-58 NAS North Island VR-57 NAS Oceana VR-56 Boeing delivers its 737-700C aircraft from Renton, Wash., to San Antonio, where an FAA-certified modification creates the C-40. C-40 Clipper Technical Specifications Engines Advanced-technology CFM56-7 Maximum Sea-Level Static Thrust Performance 24,000 lbs Maximum Gross Weight: Taxi 171,500 lbs Maximum Gross Weight: Takeoff 171,000 lbs Maximum Gross Weight: Landing 134,000 lbs Maximum Gross Weight: Zero fuel 126,000 lbs Fuel Capacity 6,875 gal Lower Hold Cargo Volume 885 cu Ft Schedule Reliability 99.58% Range 3,200-nmi (121 passengers, or 36,000-lb main deck cargo, or 70 passengers/15,000-lb in combo configuration) Cruise Speed 0.78 Mach to 0.82 Mach Altitude Capability 41,000 ft Extended Operations (ETOPS) 180 min