What should you do if you discover the seat safe/arm handle in the armed position?

Staying next to the aircraft to prevent anyone from entering is the appropriate response when you discover the seat safe/arm handle in the armed position. This action ensures that safety protocols are maintained and protects personnel from the potential hazards posed by the armed ejection seat. By remaining near the aircraft, you can monitor the situation and prevent unauthorized access, which could lead to inadvertent activation of the ejection seat.

Arming the handle immediately is not a safe practice, as it contradicts the necessary precautions in place for handling an armed ejection seat. Turning off all systems may not directly address the immediate risk posed by the armed position of the handle. Alerting the fire department may be necessary later, but the first priority should be to secure the area and prevent access to the aircraft to ensure safety.