MBU-13/ HGU-39 NBC HEADGEAR COMBO
During the mid '80, Swiss AF evaluated several NBC protective equipment. Among these the combination of "Chem-Bio" combo
MBU-13/P oxygen 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... not easy to find informations about, but working on it... stay tuned!