This aircraft hangar is based at the Research Aviation Facility at Jefferson County Airport in Broomfield, Colorado. This hangar, at 35,000 square feet, houses two research airplanes: the NSF/NCAR High-performance Instrumented Airborne Platform for Environmental Research (HIAPER) and the C-130. This aircraft hangar is based at the Research Aviation Facility at Jefferson County Airport in Broomfield, Colorado. This hangar, at 35,000 square feet, houses two research airplanes: the NSF/NCAR High-performance Instrumented Airborne Platform for Environmental Research (HIAPER) and the C-130.