What type of data is lost when a sensor experiences an A/A failure on GROUP or CONTACT?

When a sensor experiences an A/A (Air-to-Air) failure on GROUP or CONTACT, the type of data that is lost pertains to the sensor data on the last known position of detected objects or contacts. In air operations, maintaining situational awareness about the position and movement of enemy or friendly aircraft is critical. If an A/A failure occurs, it disrupts the sensor's ability to provide accurate and up-to-date information about these contacts, rendering the aircraft's situational awareness compromised.

While visual data on targets, communication data with other units, and navigation data for the aircraft are important, they are not directly affected by an A/A failure in the same manner. Visual data may still be available through other means, communication can often continue via alternate channels, and navigation systems are typically independent of the sensor experiencing the failure. Therefore, the loss of sensor data specifically impacts the capability to track and understand the positions of relevant air contacts, making it crucial for mission success.