How Is a Customs and FIS Facility Engineered at Airports?

A customs/FIS facility is the federal inspection building for international arrivals, engineered around a strict sterile passenger flow. Design covers the structure, surge-capable HVAC, baggage system interfaces, security and surveillance backbone, and federal IT infrastructure. The one-way flow is sacred: from the aircraft through primary inspection, baggage claim, and secondary, to the public exit — with sterile corridors, no bypass paths, and every door alarmed or controlled. The architecture draws the flow; the engineering makes it secure, conditioned, and operable.

The security and IT backbone is the defining MEP scope. Miles of conduit, equipment rooms with dedicated cooling and backup power, camera and access-control pathways to every door — the FIS is one of the most infrastructure-dense building types at an airport, and all of it has to meet federal standards. Designing this backbone completely in the base building is far cheaper than retrofitting it. HVAC for surge occupancy is the comfort challenge: the primary hall's loads swing violently with flight banks, while secondary inspection and offices need steady conditioning. Multiple air handlers, demand-controlled ventilation, and a control sequence built around flight schedules keep the building comfortable without wasting energy between banks.

FIS facilities succeed when CBP's facility requirements are in the design from schematic phase and the security backbone is built completely. They stall when federal standards arrive during construction documents. If you're planning a customs/FIS facility, here's what I push for on day one.

• Get CBP facility guidance early: federal standards shape the layout, security, and IT from the start
• Protect the sterile flow: architecture and engineering together must eliminate every bypass path
• Build the security backbone completely: conduit, power, and cooled equipment rooms in the base building
• Design HVAC for flight-bank surges: ventilation and recovery sized for hundreds arriving at once
• Coordinate baggage as one team: equipment pits, supports, power, and controls with the vendor early