KC-46 and F-15E Aerial Refueling Mishap: Intense emergency ATC Recording

KC-46 Boom Failure During F-15E Refueling Forces Emergency Recoveries

Aerial refueling became an emergency after the KC-46 boom bound in an F-15E receptacle during a breakaway. The release sent the boom violently upward into the tanker, leaving both aircraft to deal with damaged systems and difficult recoveries.

On 21 August 2024, a KC-46A assigned to the 22nd Air Refueling Wing and operated by the 931st Air Refueling Wing departed Travis Air Force Base to support Operation Noble Eagle and refuel an F-15E assigned to the 366th Fighter Wing.

During the fourth refueling attempt, the boom nozzle bound in the F-15E receptacle. When the connection released, the boom moved rapidly upward and struck the aft portion of the KC-46. The boom then oscillated violently and its shaft structure failed, with portions separating from the tanker.

The KC-46 crew declared an emergency and returned to Travis. The F-15E also faced a difficult recovery and diverted after unsuccessful arresting-cable attempts. The aircraft ultimately recovered safely. There were no fatalities, injuries or civilian-property damage, although the estimated aircraft damage was about $14.38 million.

Air Mobility Command's later investigation found that boom-operator control inputs, combined with excessive closure rate and receiver-aircraft instability, caused the mishap. The finding is important because the final explanation was established by the investigation rather than inferred from the radio recording.

Those oscillations produced a critical structural failure of the boom shaft, and portions of the boom detached in flight. The tanker crew declared an emergency and returned to Travis, where emergency personnel met the aircraft.

The investigation estimated aircraft damage at approximately $14.38 million. It found no fatalities, injuries or civilian-property damage. The final causal finding was that the boom operator's control inputs, together with excessive receiver closure rate and instability, led to the boom striking the tanker.

Air Mobility Command also described changes made after the KC-46 mishap series, including additional training for fighter refueling and an increase in the refueling envelope from six feet to ten feet. Those changes belong to the documented aftermath and are therefore more useful than a generic safety lesson.

Accident Facts

Sources

• Video source (ATC/audio reconstruction)
• U.S. Air Mobility Command/AIB release on the 21 August 2024 KC-46 mishap.
• Air Mobility Command, “Aircraft accident investigation boards release results of three KC-46A aerial refueling mishaps,” 25 August 2025.
• Video/ATC recording