The Federal Aviation Administration and the National Transportation Safety Board are investigating the death of a STARFlight rescuer who was killed Monday night after falling from a medical helicopter during a rescue. FAA personnel will be gathering information at the scene and other materials related to the incident before sending them to the NTSB for their review, a safety board spokesman said. The NTSB will look at several factors such as flight history, weather conditions, and issues related to crew performance, including fatigue, training, workload and equipment design. On Monday, STARFlight responded about 8:25 p.m. to a rescue of a woman who had fallen in the Barton Creek Greenbelt, near the 2600 block of Barton Hills Drive.