Aug. 22 (UPI) -- Police in Little Rock, Ark., released surveillance footage Wednesday that captured the crash of a police helicopter last week.
The crash happened Aug. 16 at a police training center, seriously injuring retired police pilot William "Bill" Denio, the department said.
Surveillance footage shows the observation helicopter, a 2001 Bell TH-67, parked on a flatbed trailer as its rotary blades spin. As the helicopter starts to ascend, it hovers over the platform, turns side-to-side and hits the ground.
Denio, who was hospitalized with a head injury, was performing a maintenance check on the helicopter at the time of the crash.