Operational flow–first level Operational flow–second level Maintenance flow–first level Maintenance flow–second level G G OR OR OR G-G-G-G-FIGURE A.4 Operational and maintenance functional flow diagram … You can edit this Block Diagram using Creately diagramming tool and include in your report/presentation/website. A Block Diagram showing F-111 Functional Flow Block Diagram. You will most likely dive into diagram after diagram … Functional Flow Block Diagram (FFBD) Functional Flow Block Diagram (FFBD) kustere Pro shared this on Dec 17, 2006 Contains all the major components for a Functional Flow Block Diagram (FFBD), which are used in developing the functional architecture of a system and describing the system's functional flow. It will be useful for you in gaining and communication an overview on and … Activities are allocated to the system structural elements via the <> relationship. The major downside to this approach is the inability to see the big picture. This approach allows for activity hierarchies, solving the need to create Functional Flow Block Diagrams (FFBD). Function Flow Block Diagram (FFBD) FFBDs have the classic features of logic structures and control flow. This functional flow diagram like many of the other techniques is a clean, logical method for "Making Sense" of a situation. Part of the behavioral (logical architecture) representation set, they unambiguously represent the flow of control through sequencing of functions and constructs, focusing exclusively on structural control and ignoring the sequencing and synchronization aspects of the corresponding data flow.