This aspect of the system satisfies Aviation Authority requirements for the airline to distribute important safety/security and operational information to flying crews. Unlike the paper based system, this allows a full on-line audit report to be available to managers and the regulator. Notices appear on the system instantly; for safety or security information the timeliness of these messages is crucial and unmatched by paper based processes. The software provides an extensive search facility. Notices can be published to defined staff roles and assigned to categories. Notices can be published in text, PDF or FlashPaper format. Crew (or any accountable role) can acknowledge/sign for notices.