When must revisions be read and reviewed before a flight assignment?

Revisions must be read and reviewed before the effective date to ensure that all personnel involved in flight operations are aware of any changes to procedures, regulations, or policies that might affect safety and operational integrity. This preemptive measure allows for adequate preparation and ensures that all team members are aligned with the latest information before they begin their assignments.

By reviewing revisions in advance of their effective date, flight crews can identify and understand any adjustments that need to be made to their operations. This proactive approach is critical in maintaining safety and compliance, as it provides time to fully integrate any new procedures or guidelines into their planning and execution processes.

Understanding that revisions could impact flight safety makes this timing essential for readiness and adherence to FARs. While it's important to stay updated on changes, waiting until after the effective date or during pre-flight briefings does not provide the necessary time for proper integration and could increase the risk of non-compliance or operational errors.