A door assembly configured to be positioned between a first compartment and a second compartment that includes a main door portion having a first decompression opening defined therein, at least a first panel portion positioned in a first position within the first decompression opening, and a decompression sensor. The first panel portion is movable linearly between the first position and a second position and is pivotable between the second position and a third position. In the third position the first compartment is in fluid communication with the second compartment via the first decompression opening.

An aircraft is equipped with an auxiliary access control barrier (AACB) to prevent access to an area of the aircraft. The AACB includes laterally extendable door panels that are slidably attached to each other to vary a width of the AACB, a hinge by which the door panels are pivotably attached to the aircraft, such that the door panels are pivotable between a deployed position, in which the door panels are positioned across the opening to prevent passage through the opening and in which the AACB has a first width, and a stowed position, in which the door panels are positioned to allow passage through the opening and in which the AACB has a second width, and one or more locks to prevent relative motion between the door panels to fix the width of the AACB and/or to secure the AACB within the opening in the bulkhead.

The present disclosure provides a door latch assembly including (a) a locking pin movable from an extended position where the locking pin is positioned in an aperture of a driver, to a retracted position where the locking pin is configured to be removed from the aperture of the driver, (b) a solenoid including a solenoid plunger having a first end coupled to the locking pin and a second end coupled to a shaft, (c) a lever arm having a first end engaging the shaft, and (d) a switch including an actuator button in contact with the lever arm, wherein when the solenoid is actuated the solenoid plunger moves to retract the locking pin from the aperture and causes the shaft to displace the lever arm and the actuator button to activate the switch.

A door latch assembly, includes: a catch support assembly, the catch support assembly including a strike body having a pin receiving aperture therein; a catch arm assembly rotatably mounted to the catch support assembly; a latch pin positioned in the pin receiving aperture and movable between a retracted position and an extended position, the latch pin protruding above the strike body in the extended position to impede rotational movement of the catch arm assembly; and a first roller mounted to the catch arm assembly and configured to engage a first side of the latch pin in the extended position; and a second roller mounted to the catch support assembly and configured to engage a second side of the latch pin in the extended position. The latch pin includes a material having a hardness of 60 Rockwell C or more, the first roller includes a material having a hardness of 33 Rockwell C or less, and the second roller includes a material having a hardness of 60 Rockwell C or more.

Certain aspects of the present disclosure provide movable barrier, including: a frame having a first side and a second side parallel to the first side; a first exterior panel connected to the first side of the frame and including: a first non-planar profile; and a first plurality of perforations; a second exterior panel connected to the second side of the frame and including: a second non-planar profile; and a second plurality of perforations; a cavity defined between the first exterior panel and the second exterior panel; and a liner disposed within the cavity and configured to: deform when an air pressure differential acting on a first side of the liner exceeds a pressure differential threshold and allow increased airflow through the movable barrier.

A method of installing an insert in an aperture of a panel includes inserting a sleeve central portion into the aperture so that a sleeve flange opposes a first side of the panel. The sleeve central portion extends from the sleeve flange. The method further includes inserting a plug central portion into the aperture so that a plug flange opposes a second side of the panel. The plug central portion extends from the plug flange. The method also includes pressing at least one of the plug and sleeve into sliding engagement with the other until the plug and sleeve are installed. When installed, a distal end of the plug is received into a sleeve cavity and resilient beams defined by an extension of the sleeve central portion are elastically deflected by a wall of the plug central portion. The plug flange defines an aperture extending into a plug cavity.

A system of a secured cockpit door comprises a digital camera that comprises a digital optical sensor, a fingerprint scanner that comprises a glass top and a digital optical sensor, a biometrics processor, an identification verification processor, a database of pre-encoded authorized facial feature maps and authorized fingerprint maps, an electrochemical pad comprises an array of electrochemical sensors, a breathalyzer, and an ethanol concentration level processor.

A method for producing an armored wall for an aircraft by determining an available thickness of the wall, an allowable areal mass of the wall, and an available space for a wall deformation due to ballistic impact. The method includes retrieving a parameterization of a plurality of armoring materials, which includes a parameter for each of a plurality of material characteristics for each of the plurality of armoring materials. The method also includes comparing the available wall thickness, the allowable areal mass, and the available deformation space with a corresponding parameter of the parameterization, selecting one armoring material for the wall from the plurality of armoring materials based on a result of comparing, and manufacturing a wall by supplementing the selected armoring material to a basic wall structure.

Secondary barriers for aircraft are disclosed. An example secondary barrier includes a plurality of tracks to mount to a first monument in a cabin of an aircraft and a plurality of rods, where respective ones of the rods slidably engage respective ones of the tracks. The secondary barrier includes a panel coupled to respective ends of the rods. The rods to move relative to the tracks between a stowed position and a deployed position. The panel in the deployed position is to interface with a second monument in the cabin opposite the first monument. The rods are to extend between the first monument and the second monument when the secondary barrier is in the deployed position.

A door opening system with a deceleration mechanism may be adapted to control an opening of a door module that includes a door panel and a door frame. Deceleration mechanism may include strap that connects door panel with door frame, spool, and spool. Spool may receive one end of strap, is biased to roll up a first portion of strap, and adapted to perform a first unwinding of the first portion of strap. Spool may receive a second end of strap, is biased to roll up a second portion of strap, and adapted to perform a second unwinding of the second portion of strap from spool. Spool may include a braking apparatus that is adapted to decelerate the second unwinding when a velocity of the second unwinding is above a predetermined threshold.