The respondent, Mrs Diane Elizabeth Bewick, was severely injured and rendered paraplegic during a tandem paragliding flight for reward near Hermanus on 12 April 2004. She had contracted with commercial operators for the flight and was flown by an experienced pilot. Shortly after take-off the paraglider suffered a wing collapse, resulting in a collision with the hillside. Bewick sued multiple defendants for damages. She settled with the pilot and his employers and withdrew claims against the Department of Transport, leaving only the South African Hang and Paragliding Association (SAHPA) and the South African Civil Aviation Authority (SACAA). Her claim against them was based on an alleged omission: that tandem paragliding for reward was illegal at the time, that the appellants knew this, were under statutory duties to prevent or terminate such illegal activity, negligently failed to do so, and that this failure caused her injuries.