What is the four-digit code used for an aircraft involved in a Search and Rescue (SAR) mission?

The correct four-digit code used for an aircraft involved in a Search and Rescue (SAR) mission is 1277. This code is specifically designated within the aviation system to help air traffic controllers and other relevant agencies identify aircraft that are engaged in SAR operations. Using this unique code allows for efficient communication and coordination among various agencies, ensuring that search and rescue efforts are prioritized and effectively managed.

Understanding the significance of this code highlights how vital it is for clarity and quick response in emergency situations. Each code in the air traffic management system has its own specific function, and recognizing the correct code for SAR missions is crucial for controllers who must keep track of operations that could save lives.