USAF Tests Reach of KC-135s in 72-Hour Endurance Mission

During the endurance event, the two Stratotankers flew more than 36,000 miles, refueling B-2 Spirits, B-52 Stratofortresses, an E-3 Sentry and an E-6B Mercury.

Kimberly Johnson

Thursday, October 13, 2022 at 05:30 PM ET

Verified

A KC-135 Stratotanker from Fairchild Air Force Base, Wash. refuels a B-52 Stratofortess during a 72-hour endurance mission. [Courtesy: U.S. Air Force]

Key Takeaways:

Two KC-135 Stratotankers successfully completed a first-ever 72-hour single-aircraft endurance mission, demonstrating exceptional range and crew stamina.
During the mission, the Stratotankers flew over 36,000 miles, refueling various Air Force assets like B-2s, B-52s, E-3s, and E-6Bs.
The exercise showcased innovative tactics such as engine-running crew changes and hot-pit refueling, minimizing ground time and maximizing mission persistence.
This endurance mission serves as a critical proof of concept for sustained operations over vast distances and in contested environments, supporting future Air Force planning.

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Aircrews of two KC-135s Stratotankers, one of the Air Force’s most iconic aircraft, now have a reputation for also having some of the highest stamina in the service after the aircraft recently conducted 72-hour single-aircraft endurance missions.

During the endurance event—a first for the aircraft—the two Stratotankers flew more than 36,000 miles, refueling B-2 Spirits, B-52 Stratofortresses, an E-3 Sentry, and an E-6B Mercury. They landed only to refuel and switch crews, and service engine oil while at least one engine was running, according to the Air Force.