Key Facts

• The pilot, named Liu, had chronic insomnia and anxiety.
• Liu’s diary showed multiple thoughts of ending his life.
• The crash injured 13 other people in the building.
• The plane was a light sport aircraft that flew into Beijing’s heavily restricted airspace without clear authorization.
• Beijing’s airspace is tightly controlled, with strict rules for light aircraft and drones.
• Liu had sport and private pilot licenses, which require medical checks for fitness.
• Authorities said Liu made an accompanied flight earlier that day before flying alone.
• The investigation concluded the crash was caused by personal reasons, not an accident or mechanical failure.