Hartwell developed a rapid decompression pressure relief latch after the September 11th attack as additional security measures mandated by the FAA. Latch used to lock the blowout panels on the Cockpit Door and can only be functioned during a pressure event. When Latch senses a rapid change in cabin pressure, the latch automatically unlocks allowing it to function, releasing the panels in the Cockpit Door within milliseconds. This prevents structural failure of the door or bulkhead due to sudden, unequal pressure loads.

Features and Benefits:

  • Incorporate into door structure with minimal engineering effort
  • Quick and cost-effective due to the mechanical system as compared to solenoid actuated system
  • Unique design allows for cabin/flight deck pressure equalization during rapid decompression event