Educational familiarization only. This TechOpsBase resource is an original learning transformation grounded in a privately supplied B737 MAX ATA 28 source. It does not reproduce manufacturer task steps, limits, figures or controlled maintenance instructions. Current approved data and aircraft effectivity control real work.
What this resource teaches
An original diagram linking storage, boost sources, feed/crossfeed paths, APU/engine consumers and the separate ATA 47 inert-gas protection layer.
Fuel flow and inerting are different layers
ATA 28 moves and measures fuel; ATA 47 reduces center-tank flammability by supplying nitrogen-enriched air. They interact around the tank but do different jobs.
Follow pressure and path separately
The diagram uses source blocks for pumps and separate valve/path blocks so learners do not confuse a flow source with a routing device.
Original transformation
The layout is not the manufacturer figure. It is a simplified TechOpsBase teaching model derived from source-supported relationships.
Evidence-first study method
For any system complaint, separate source/input, control logic, physical response, sensing/indication and consumer/result. When two layers disagree, that disagreement is useful evidence. Do not turn that evidence into a maintenance action until the applicable approved fault-isolation or maintenance data is open.
Approved-data boundary
Educational system explanation only. Do not use this page to perform maintenance, operate aircraft systems, isolate components or determine dispatch status. Current approved maintenance data, aircraft effectivity and operator procedures control real aircraft work.
