A pilot lost control of his aircraft while taking off at a flight show in southern Germany and crashed into a group of spectators, killing one person and injuring 38.
The crash happened at the Lillinghof airfield, about 20 miles north-east of Nuremberg, where up to 5,000 people attended Sunday's flight show.
Five people were seriously injured, while 33 others were slightly injured, of whom 22 were taken to a hospital, a police spokesman said. Among those injured was a seven-year-old child.
Police said it was still unknown why the pilot of the 70-year-old biplane lost control of the aircraft.
The 68-year-old pilot was not hurt in the incident, but a 46-year-old woman died from her injuries at the airfield.
The flight show was to include stunts by small aircraft and sky divers, helicopter tours and tours with a Russian-built Antonov An-2 biplane.