During a PAC3 system check, what must be ensured before the test launch procedure?

Before initiating the test launch procedure during a PAC3 system check, it is crucial to ensure that all systems are operational and ready. This means that every subsystem, component, and software involved in the missile defense system must be functioning as intended. Operational readiness is vital to ensure the success of the launch and the safety of the personnel involved. Any malfunction or issue with the systems could lead to a failed test launch or potentially dangerous situations.

While safety distances and favorable weather conditions are essential considerations during military operations, the primary factor preceding the test launch is the operational status of the systems. Ensuring that all components are ready mitigates risks associated with launching the system under unprepared conditions, ultimately supporting effective decision-making and mission success.