The NTSB has completed recovering wreckage of a Flight for Life Colorado Airbus AS350 that crashed July 3 in Frisco, Colo., killing the pilot and injuring a flight paramedic and nurse. The aeromedical helicopter appeared to begin yawing about 20 seconds into the repositioning flight and make several complete revolutions before hitting the ground, according to the NTSB. The safety board's investigation is ongoing; it plans to release a preliminary report within a few days. Flight For Life Colorado's aircraft, pilots and mechanics are provided by Air Methods Corp., which recently faced possible fines from the FAA for operating a Bell Helicopter 407 with an overdue inspection of tail rotor drive shaft components. The aeromedical program has helicopters based at five Colorado hospitals, including St. Anthony Summit Medical Center in Frisco.