KC-46 vs KC-135 Size Overview
The Boeing KC-46 Pegasus is a newer widebody tanker based on the 767 airframe, while the KC-135 Stratotanker is a narrowbody jet derived from the 707. The KC-46 is generally longer, wider, and taller, with a larger wingspan and greater fuel volume than the KC-135. These size differences affect cargo space, refueling capacity, and mission flexibility.
Key Dimensions and Capacity
The KC-46 has a length of about 235 feet, a wingspan near 158 feet, and can carry roughly 212,000 pounds of fuel. The KC-135 measures about 136 feet long, with a wingspan of 131 feet, and typically holds around 200,000 pounds of fuel. The KC-46’s wider fuselage also allows more cabin volume for passengers and cargo.
Operational Implications of Size
Larger size gives the KC-46 more fuel and payload room, but it also requires bigger ground support equipment and wider taxiways. The KC-135’s smaller frame means simpler basing and maintenance at older facilities. Both aircraft serve as aerial refuelers and can be compared in detailed specs on Boeing’s official KC-46 page https://www.boeing.com/commercial/aircraft/767-family/kc-46/.
