155.Section 48 provides that the CAA may, by notice, revoke a licence in the circumstances specified in the licence (in accordance with section 17). Before revoking a licence the CAA must notify the licence holder that it intends to revoke the licence, giving its reasons and allowing the licence holder to make representations. The CAA must allow a period of at least 30 days from notification before it gives notice revoking a licence, unless the licence holder agrees otherwise. The period may be extended once for up to 30 days. The CAA may withdraw a notice revoking a licence, giving its reasons for doing so. The notice of revocation, extension or withdrawal must be published as soon as practicable after it has been given and a copy must be sent to appropriate industry representatives.