Aircraft accidents refer to incidents involving airplanes that result in damage or injury. These accidents can occur during various phases of flight, including takeoff, cruising, and landing. Factors contributing to aircraft accidents may include mechanical failure, human error, or adverse weather conditions. Investigations are conducted by organizations like the National Transportation Safety Board (NTSB) to determine the causes of these accidents. The findings help improve aviation safety by implementing new regulations and technologies, ultimately reducing the likelihood of future incidents.