When does the transfer of search responsibility to RCC occur?

The transfer of search responsibility to the Rescue Coordination Center (RCC) occurs when the ALNOT (Alert Notice) search has negative results. This is when initial search efforts have failed to locate the aircraft, and it becomes evident that more extensive search and rescue operations are necessary. At this point, the responsibility for coordinating the search and rescue efforts transitions to the RCC, as they handle larger-scale searches and have the resources and authority to initiate a more comprehensive search operation.

Choosing this answer reflects an understanding of the protocol in emergency situations involving aircraft. It emphasizes the importance of initial search efforts while also recognizing that the responsibility must shift to a dedicated agency when those efforts are insufficient. This ensures that the appropriate level of response is initiated to maximize the chances of locating the aircraft and any potential survivors.