Abstract: A security apparatus comprises in combination, an aircraft having a flight deck, a passenger cabin, and a revolving door assembly for moving from one to the other within the aircraft. The door assembly includes a fixed outer cylindrical wall and a movable inner cylindrical wall, the later mounted for rotation within the outer cylindrical wall. The outer wall provides a pair of outer door portals or doorways in opposing positions, one common to the flight deck, the other common to the passenger cabin. The inner wall provides a singular door portal which may be aligned with either one of the pair of outer door portals depending on the rotational position of the inner wall. Locks are positioned on the outer wall to disable rotation of the inner wall in either passage positions as well as a neutral position for detaining a dangerous person within the revolving door assembly.

Abstract: A security apparatus comprises in combination, an aircraft having a flight deck, a passenger cabin, and a revolving door assembly for moving from one to the other within the aircraft. The door assembly includes a fixed outer cylindrical wall and a movable inner cylindrical wall, the later mounted for rotation within the outer cylindrical wall. The outer wall provides a pair of outer door portals or doorways in opposing positions, one common to the flight deck, the other common to the passenger cabin. The inner wall provides a singular door portal which may be aligned with either one of the pair of outer door portals depending on the rotational position of the inner wall. Locks are positioned on the outer wall to disable rotation of the inner wall in either passage positions as well as a neutral position for detaining a dangerous person within the revolving door assembly.