Final answer:
The PIC must revise estimated entry times into the ADIZ when deviations occur, with a particular focus on flight safety and national security near Confirmed or Possible SAM sites.
Step-by-step explanation:
When on a defense flight plan or flight itinerary, the Pilot in Command (PIC) must revise the estimated time and point of entry into the Air Defense Identification Zone (ADIZ) if there is a deviation of more than a specified amount of time. While this specific question does not state the exact time deviation required for notification, in typical aviation practice, it is important for the PIC to provide accurate updates to air traffic control to ensure flight safety and compliance with defense requirements. This procedure is particularly critical in areas with potential threats such as a Confirmed SAM site or a Possible SAM site, where having an effective air defense perimeter (with an estimated radius of 30 nautical miles) is crucial for national security.