MBU-13/ HGU-39 NBC HEADGEAR COMBO
Between the mid to late '80s, the Swiss AF evaluated a number of NBC protective equipment. Among these the "Chem-Bio" combination
MBU-13/P full face mask - CRU-80 /P filter.
Together with the MBU-13 / CRU-80 assembly , crew wore an HGU-39/ P helmet.
The helmet shell is the same as the SPH-4 one, without visors, as the NBC mask prevent their use.
For this reason it was possible to install, on the mask assembly, a dark visor provided with velcro fittings.
Swiss AF evaluated also other protective devices, as the MBU-19 protective hood, none of whom ever entered in service.