Our company has been producing cockpit security systems for over 50 years.  Early versions were door latches and locks coupled with solenoid controlled electric strikes that allowed the
flight crew to “buzz” in the flight attendant. 

Of necessity, these have evolved into more complex and more secure systems. We now offer secure electronic control (coded entry, controller in cockpit, access controls and keypads in cabin), enhanced hardware and complete cockpit doors.  These systems meet intrusions and ballistics requirements.