When would you ever need to use spray foam insulation in an airplane and why would you ever use it? I've never seen it used in any airplane that was professionally built after 1903 - not even in Poland.
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
Maybe for creating a cowl or plenum mold shape, but that's about it.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2021 dues paid
N16GN flying 750 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, IFD440
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
Expanding polyurethane foam was not mentioned here, but we have seen a few builders promoting the idea of using it under the front floor of an RV-10. A good prebuy will probably find similar in other models too.
__________________ Dan Horton RV-8 SS Barrett IO-390