A rule in the sailing instructions for an event requires that a certificate be produced or its existence verified before a boat races. One boat does not comply with this requirement, but before the first race she provides the race committee with a statement signed by the person in charge that the boat has a valid certificate. At the end of the event, the certificate has neither been produced nor verified.

What should the race committee do?

Answer
The race committee is required to score her DSQ for all races without a hearing (see rules 78.2 and A5.1).