A plug door assembly for a pressurized aircraft is provided. The door assembly includes a surround and a door, and connector assemblies along the edges that act to transfer in-place stresses directly across the fuselage opening via the door, as well as stops that react redial loads generated by cabin pressure. The door assembly obviates the need for a separate frame to transmit stresses around the perimeter of the fuselage opening.

Systems, apparatuses, and methods provide for a door handle mechanism including a vent panel, a handle lever, and a four bar mechanism. The handle lever has a lift-to-open configuration. The four bar mechanism is coupled to the handle lever and the vent panel. The four bar mechanism is to time sequence operations to close an aircraft passenger door, latch the aircraft passenger door, lock the aircraft passenger door, and close the vent panel in response to the handle lever being toggled between a closed position and an open position.

An aircraft door mounted in a fuselage in a reference frame X, Y, Z, having a casing, a door leaf and a support arm enabling the door leaf to be installed and the position thereof to be adjusted relative to the fuselage by a pair of fasteners. Each fastener (10, 40) includes a pivot (16, 46) rotatable about a common axis parallel to the axis Z, a base (13, 43) fastened to the casing (3), and a trolley (14, 44) movable on this base (13, 43), the base (13, 43) and the trolley (14, 44) of each fastener (10, 40) forming two translational adjustment links in directions parallel to the X and Y axes, these directions determining adjustment axes (11, 12; 41, 42) secant in a plane parallel to the plane XY.

An aircraft includes a system including an emergency exit door within the internal cabin. The emergency exit door includes a lever configured to be engaged to open the emergency exit door. A first cover is removably secured to the emergency exit door. The first cover is configured to be removed to gain access to the lever. A second cover is disposed between the lever and the first cover. The second cover is configured to be removed to gain access to the lever. One or more sensors are configured to detect positions of the first cover and the second cover.

A pressure differential lockout system for a door separating first and second regions comprises a piston assembly, a follower linkage, and a fluid conduit. The follower linkage is mechanically coupled with a latch release handle of the door. The piston assembly includes a piston and a piston housing collectively defining an interior chamber. The fluid conduit provides fluid communication between the first region and the interior chamber. The piston is translatable along a translation axis relative to the piston housing responsive to a pressure differential between the interior chamber and the second region. The piston defines a channel that is parallel to the translation axis and that accommodates a follower component of the follower linkage. The channel inhibits rotation of the follower linkage within a first translation range of the piston and enables rotation of the follower linkage within a second translation range of the piston.

A door assembly for an aircraft includes a door, an interior door handle and an exterior door handle, and a clutch assembly. The interior door handle and the exterior door handle are rotatable about a door handle rotational axis. The clutch assembly includes a shaft, an exterior coupling body, an exterior handle body, and a clutch lever. The shaft includes an interface portion. The interface portion includes a handle tooth. The exterior coupling body includes a fixed body portion disposed adjacent the interface portion. The exterior handle body is rotatably mounted to the exterior coupling body. The exterior handle body is rotatable between and to an engaged position and a disengaged position. The clutch lever is rotatably mounted to the exterior coupling body. The clutch lever is pivotable between and to an engaged pivot position and a disengaged pivot position. In the engaged pivot position, the handle tooth is positioned circumferentially between the clutch lever and the fixed body portion.

Systems for latching and locking an aircraft door and associated methods are disclosed. The system comprises a latch and a lock. The latch can be configurable between: a latched configuration where the latch interferes with a lift mechanism for causing lifting of the aircraft door to permit opening of the aircraft door; and an unlatched configuration where the lift mechanism is permitted to cause lifting of the aircraft door. The lock can be configurable between: a locked configuration where a configuration change of the latch from the latched configuration to the unlatched configuration is prevented; and an unlocked configuration where the configuration change of the latch from the latched configuration to the unlatched configuration is permitted.

A flag mechanism for an aircraft door includes a first arm and a second arm each having a flag on a first end and a catch on a second end. A first cam is operatively coupled to a first latching member and a second cam is operatively coupled a second latching member. The first and second latching members are each configured for latching the aircraft door, which are locked when the first and second cams are rotated to a locked position. A first stud extends from a side of the first cam and a second stud extends from a side of the second cam. The first and second studs are each configured to be received by a respective catch of the first and second arms while the first and second cams are rotated, thereby moving each respective flag from a first position to a second position for simultaneous visual inspection.

A door mechanism has an arm, an arm-door interface, and an arm-body interface. The arm-body interface couples the arm to a door opening in a body in a manner allowing rotation of the arm about an arm-body hinge axis. The arm-door interface couples the arm to a door configured to remain parallel to the door opening when moved between closed and open positions. The arm-door interface comprises an arm-door upper joint and an arm-door lower joint located below and inboard of the arm-door upper joint. The arm-door upper joint is a spherical joint. The arm-door lower joint is located inboard of the arm-door upper joint when the door is in the closed position. The arm-door lower joint pivots about the spherical joint in a manner causing a door lower portion to move in an outboard direction away from the body when the door is moved to the open position.

A mechanical programming system for a door has at least one track and at least two links. The track is formed in an arm coupling the door to a door opening in a body. The links are pivotably connected in series between an arm-body interface and an arm-door interface, and transmit rotational motion of the arm about an arm-body hinge axis to the door for rotation about an arm-door hinge axis. At least one link is coupled to the track via a track engaging element. The track has a directional path shape that causes an orientation of at least one link to change as the track engaging element slides along the track in a manner maintaining the door parallel to the door opening during an opening sequence of translating the door from a closed position to an open position while allowing non-parallel orientations of the door during the opening sequence.