Helicopter crash refers to an accident involving a helicopter that results in a sudden and uncontrolled descent, leading to impacts that can cause significant damage to the aircraft, injury to its occupants, and potential damage to people or property on the ground. Such crashes can occur due to various factors, including mechanical failure, pilot error, adverse weather conditions, or operational errors. The investigation of helicopter crashes often involves analyses of flight data, maintenance records, and compliance with safety regulations to determine the cause and to improve future safety measures.