Aircraft Hangars

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Aircraft hangars present significant challenges in construction from both Building and Fire Code perspectives. Partial adoption of NFPA standards often necessitates clarity through an Engineering Basis of Design document. This document allows the Fire Protection Engineer to guide the project design team and effectively communicate with local Authorities Having Jurisdiction (AHJs).

Advancements in technology and growing environmental concerns are reshaping the protection requirements for aircraft storage. In a recent review spanning 32 years of historical data, the US Air Force determined that AFFF foam suppression systems did not extinguish a single fire in an aircraft hangar. Consequently, following a congressional mandate, the Pentagon has implemented a sundown policy to phase out foam suppression by October 2024.

Alternative options to AFFF foam include overhead deluge water sprinkler systems and ignitable liquid drainage floor assemblies, which safely evacuate spilled fuel to designated areas. These solutions mitigate fire risks while aligning with evolving safety standards and environmental priorities in aircraft hangar facilities.