When is the MDO considered locked?

The MDO, or Multi-Domain Operation, is considered locked when both throw levers are closed and facing the rear. This positioning ensures that the mechanism is securely locked in place, preventing accidental discharges or malfunctions during operation. When the throw levers are closed and oriented as specified, they indicate that all systems are securely fastened, which is crucial for maintaining safety and operational integrity in dynamic environments.

Options that suggest the MDO is locked based on the position of the levers facing forward or merely having the primary lock engaged do not ensure the same level of security and confirmation necessary for safe operation. Additionally, indicating that the MDO is powered on does not pertain to its locked status; power alone does not guarantee physical security of the device. Hence, the requirement for the throw levers to be both closed and facing the rear is key to confirming that the MDO is properly locked and operationally safe.