An Air Force HH-60W Jolly Green II operates at Kadena Air Base, Okinawa, Jan. 14, 2025. (James Johnson/U.S. Air Force)
Rotor wash — the powerful wind generated by helicopter blades — forced a teacher’s umbrella open and knocked her off balance, leading to a fatal fall last year at Kadena Air Base, Okinawa, according to an Air Force accident investigation released Wednesday.
The Department of Defense Education Activity teacher died five days after an HH-60W Jolly Green II rescue helicopter flew too close to spectators waiting for a flight demonstration outside Kadena Elementary School on April 22, the Air Force Accident Investigation Board report said.
The investigation cited “failures in mission planning and poorly staffed oversight processes” and “an operational mindset fostering false confidence of safety” as substantial factors in the incident.
The mishap, “with the tragic loss of a longtime DODEA teacher and deeply respected community member — regrettably makes clear that their well-meaning confidence was misplaced,” Brig. Gen. W. Alan Matney, president of the investigation board, said in the report.
The aircraft, assigned to Kadena’s 33rd Rescue Squadron, approached the school landing zone around 9:30 a.m. as part of a Month of the Military Child event, according to the report.
The helicopter’s rotor wash knocked over at least two students — neither of whom were seriously hurt — and the 60-year-old woman, who suffered severe head injuries.
The woman, identified in the report only as a Japanese civilian who taught at Bechtel Elementary School, died despite emergency treatment at U.S. Naval Hospital Okinawa and Ryukyu University Hospital.
Kadena’s 18th Wing declined to identify the woman in April. The wing again declined to identify her in an unsigned statement emailed to Stars and Stripes on Friday, citing privacy concerns.
The helicopter flew to less than one-third of the minimum distance allowed from spectators, the accident report said. Air Force regulations require at least 500 feet of separation, while event organizers set a minimum of 600 feet.
Spectators, however, were positioned in three areas about 80 feet to 160 feet from the helicopter’s approach and landing zone, according to the report. The teacher was about 85 feet from the aircraft’s final approach path — among the closest of all spectators.
The project officer and landing zone lead, who helped designate spectator areas, testified they were unaware of the 500-foot and 600-foot distance requirements.
Investigators detailed a cascade of planning failures, including reliance on past demonstrations, unclear spectator locations, conflicting approval packages and fragmented oversight.
A third “substantially contributing factor” was the umbrella the woman was holding under her left arm, the report said. The helicopter’s rotor wash caught the umbrella and briefly forced it open.
“The force of the rotor wash in her open umbrella rapidly pulled the victim off balance and down to the concrete walkway, resulting in head injuries much more severe than those typically associated with a routine fall,” the report said.
Investigators estimated the woman was exposed to winds averaging 29 mph, with gusts up to 40 mph.
The Air Force aims to prevent future accidents with rigorous safety standards and procedures, according to the 18th Wing’s email.
“We offer our deepest condolences to the victim, her family and everyone affected by this tragedy,” the statement said.
