Oxygen Mask Cutter (PADD)
Critical life saving device designed to increase survivability of the downed aircrew over water by cutting the oxygen mask air hose connector of the mask . The anti suffocation is composed of an explosive cartridge actuated cutter (CAC) which cutting the air hose free of the mask in emergency to allow the incapacitated aircrew breathing during landing in water once he or she have resurfaced from a water landing .
The PADD is typically installed on MBU-20/P Oxygen Masks which interfaces the HGU-55CE Combat Edge USAF aircrew helmet