During what situation would an Initial CASREP typically be filled out?

An Initial CASREP (Casualty Report) is typically filled out during a situation where there is a system failure. This report serves as an early notification to higher command that a unit has experienced a significant issue that could affect its operational capabilities. The purpose of this report is to provide an initial assessment of the problem, detail the impact on mission readiness, and outline the necessary corrective actions needed.

In the context of the answer, it is essential to recognize that the CASREP process begins as soon as the failure is identified. This prompt reporting can help ensure timely support and resource allocation for repairs or replacements. By documenting and reporting this failure, the command chain can effectively track the situation and plan for resolution, thereby maintaining operational effectiveness.

The other options refer to states or conditions that either do not denote a failure (like system functionality) or pertain to afteraction reviews (like damage assessment or resolution of issues), which would not initiate the CASREP process.