Answer
Repeat the urgent call using the agreed escalation or stop phrase and take any observer action defined in the procedure.
Explanation
Silence is not confirmation. A safety call needs acknowledgment or an escalation path.
Drone exam · Communications and crew coordination
Repeat the urgent call using the agreed escalation or stop phrase and take any observer action defined in the procedure.
Silence is not confirmation. A safety call needs acknowledgment or an escalation path.