Abstract: A method and apparatus for automatically releasing a gas from a pressurized cartridge of the gas is provided, especially for the purpose of inflating an emergency balloon. The apparatus includes an automatic signal balloon inflator, having a support structure, an upper surface and a bottom plate. The bottom plate has at least a single cartridge mount, each with a vent and a pin port. The pin port connects to the cartridge mount. At least a single pressurized cartridge, containing a gas stored under pressure, is received into each cartridge mount in the support structure. A spring loaded piston is mounted upon the support structure. A plunger with a piston contact surface and a puncture pin is forced by the spring loaded piston to depress and penetrate the pressurized cartridge, releasing the gas contents of the pressurized cartridge through the vent. A firing spring forces the piston to engage the plunger.