What does a fighter transmit to the observer controller upon entering communications range?

When entering communications range, a fighter transmits a fighter check-in brief to the observer controller. This brief serves an important function in establishing situational awareness and facilitating coordinated operations. The fighter check-in brief typically includes key information like the fighter's call sign, position, fuel state, and any relevant updates on current readiness or situation.

This communication is essential for ensuring that both the fighter and the observer controller are on the same page regarding the tactical environment and can effectively plan and execute their joint operations. The information shared in the fighter check-in brief supports timely decision-making and helps synchronize actions between the air and ground forces.

Other options may involve various types of communications, but they are typically not the standard initial contact a fighter makes upon entering range. For instance, a mission briefing usually occurs before operations commence, an operational readiness report may be provided at different times or as needed, and engagement status is typically communicated later during the operational phase as specific targets or threats are identified.