What does the red BIT failure indicator imply about the CLU's launch capability?

• A. CLU may not be able to launch missile
• B. CLU is ready to launch after a system reset
• C. CLU is operating normally
• D. CLU cannot be accessed by the operator

Answer: (A)

A red BIT failure indicator on the CLU means a Built-In Test has detected a fault in the system. That fault flags the launch system as unsafe or unreliable, so the CLU may not be able to launch a missile until the fault is diagnosed and repaired. A system reset does not automatically clear a BIT failure and restore readiness; the fault must be addressed. If the indicators showed normal operation, you’d expect a normal, non-fault status rather than a red warning. The BIT status specifically reflects system health affecting launch capability, not simply whether the operator can access the CLU.