DelayMessage

urn:aero:airm:1.0.0:ConceptualModel:Subjects:AirTrafficOperations:InformationServicesProducts:FlightInformationProduct:DelayMessage

A message transmitted when the departure of an aircraft, for which basic flight plan data (FPL) has been sent,is delayed by more than 30 minutes after the estimated off-block time contained in the basic flight plan data.

Source: ICAO Doc 4444,