If an error is discovered in a Form D before "Time Effective" is given, what is the required action?

In the context of managing Forms D, when an error is discovered before the "Time Effective" is issued, the correct course of action is to mark the Form D as "Void" and reissue it under a different number. This process ensures clarity and accuracy in train operations, as it prevents any potential confusion or miscommunication that could arise from maintaining an erroneous document in use.

Voiding the incorrect form signifies to all parties involved that it is no longer valid, thus eliminating the risk of operational errors based on outdated or incorrect information. Reissuing under a new number also creates a clear audit trail showing when the error was recognized and rectified, facilitating better management of communications and operations within the rail system.

Keeping or ignoring the error could lead to serious safety risks and operational mishaps, while simply reissuing without changes does not adequately address the error that was initially noted. Verbally informing the crew adds another layer of communication but does not substitute the need for formally addressing the invalid form through appropriate reissuance procedures.