Downwash from an HH-60 Pave Hawk rescue helicopter assigned to the Alaska Air National Guard’s 210th Rescue Squadron at JB Elmendorf-Richardson, Alaska, caused a rock to dislodge and knock a hiker unconscious in August 2014, Pacific Air Forces investigators found. The helicopter was hovering to rescue another hiker who was already injured and stuck on a Copper Mountain ridgeline when the mishap occurred, according to an accident investigation board report released Tuesday. The rock struck the previously uninjured hiker while he watched the rescue, causing a critical head wound. The need for a quick extraction of the first injured hiker; inability to use an alternate, safer rescue site; and the then uninjured hiker’s lifting of his head to watch the rescue hoist—despite instructions to protect himself with his backpack—substantially contributed to the mishap, investigators found.
The Air Force has embraced new technical approaches like open mission systems and rapid software updates for cutting-edge aircraft like the B-21 and Collaborative Combat Aircraft. Increasingly, though, the service is also working to apply these to its older, “legacy” aircraft, officials said this week.