The U.S. Army says it is investigating after one of its helicopters allegedly released fuel at a low altitude over neighborhoods on the Phoenix-Tempe border last week.
Phoenix and Tempe fire crews were called to several neighborhoods on Feb. 5 for reports of an aircraft fuel-release.
A Tempe official said when crews arrived on scene, there was a strong odor of fuel but no injuries were reported in that city.
According to ABC15, a Phoenix woman suffered chemical burns on her eye from falling fuel, and she had to be treated at the hospital.
The Phoenix Fire Department would not comment, referring all questions to the Army.
An Army spokesperson said they are “aware of an incident potentially involving an Army aircraft and fuel release near Tempe," but did not provide additional information, citing an ongoing investigation.
Fuel releases are common in Aviation as a way to cut weight for landing.
Fuel releases are regulated, and require permission from air traffic control. They usually occur at high altitudes to allow the fuel to atomize, and are not usually done over populated areas.
The Arizona Department of Emergency and Military Affairs said it was an active-duty Army helicopter, not an Arizona National Guard helicopter. DEMA said they had no part in this incident, and to contact the Army for further information.
Full U.S. Army statement
“The U.S. Army is aware of an incident potentially involving an Army aircraft and fuel release near Tempe, Ariz. on Feb. 5, 2026. Coordination with the Tempe Fire Department and Environmental Services is ongoing to assess any possible impact. The Army is looking into the incident and will release more details as they become available. For additional questions about the clean-up, please contact the Tempe Fire Department and Environmental Services.”
Full city of Tempe statement
“Tempe Fire Medical Rescue responded to two reports of aircraft fuel release on Feb. 5 at Priest Drive and 10th and Sixth Street and Wilson. No injuries were reported in Tempe. While there was a strong odor in some neighborhoods, the fuel dissipated quickly so neither Tempe Fire Medical Rescue nor Tempe Environmental Services needed to take subsequent action. Any questions about this incident should be directed to the U.S. Army.”
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