The accident happend on June 18, 1972 on the way back from the European Conference in Edinburgh and after a stopover in London Heathrow. Some members decide to take the boat (Jan Christiaens) or miss the plane (Michel Swenden). At 17:19, just after take-off, flight BA548 from London to Brussels, with 118 passengers, crashes in Staines. Read more about the accident on the Staines memorial website.
Shortly after the accident, the Staines Foundation was founded. This organization still exists today and supports the families of those who get seriously injured or lose their life in JCI duty.