What does CF required mean on a MAF?

The notation "CF required" on a Maintenance Action Form (MAF) indicates that a component requires a Functional Check Flight (FCF) in accordance with instruction 4790.12B. This signifies that the component has been through some work or a recent maintenance activity that necessitates verification of its operational capability before it can be deemed fully functional and ready for use. The FCF serves as a critical step in ensuring safety and operational effectiveness after maintenance, as it involves the actual testing of the component under real operational conditions.

In this context, understanding the importance of FCF is essential, as it helps to validate the integrity and performance of the component post-maintenance. The requirement for a functional check also reflects compliance with established procedures to ensure that all maintenance has been effectively executed and that the component meets the necessary operational standards.