An aircraft fuselage comprising: an aircraft door or access panel comprising one or more receiving elements; and a locking apparatus for securing the aircraft door or access panel in an opening formed in the aircraft fuselage, the locking apparatus comprising: a shaft having a longitudinal axis, the shaft comprising a bolt, a longitudinal axis of the bolt being aligned with the longitudinal axis of the shaft; at least one mounting member for mounting the shaft to the aircraft fuselage such that the shaft may be rotated about its longitudinal axis; securing means fixedly mounted to the shaft and arranged such that: rotation of the shaft about its longitudinal axis moves the securing means from being in a first position to being in a second position; the first position of the securing means is a position in which the securing means are not coupled to the receiving element of the aircraft door or panel, thereby allowing movement of the aircraft door or panel relative to the aircraft fuselage; and the second position of the securing means is a position in which the securing means are coupled to the receiving element aircraft door or panel, thereby preventing movement of the aircraft door or panel relative to the aircraft fuselage; a locking member for coupling to the shaft, the locking member comprising a hole, the shape of the hole corresponding to the shape of the bolt such that the locking member may be coupled to the shaft by positioning the locking member relative to the shaft such that the bolt is in the hole, such that rotation of the shaft about its longitudinal axis causes movement of the locking member; and fixing means for, when the shaft has been rotated such that the securing means are in the second position, fixedly attaching the locking member to the aircraft fuselage thereby preventing rotation of the shaft. an aircraft door or access panel comprising one or more receiving elements; and a locking apparatus for securing the aircraft door or access panel in an opening formed in the aircraft fuselage, the locking apparatus comprising: a shaft having a longitudinal axis, the shaft comprising a bolt, a longitudinal axis of the bolt being aligned with the longitudinal axis of the shaft; at least one mounting member for mounting the shaft to the aircraft fuselage such that the shaft may be rotated about its longitudinal axis; securing means fixedly mounted to the shaft and arranged such that: rotation of the shaft about its longitudinal axis moves the securing means from being in a first position to being in a second position; the first position of the securing means is a position in which the securing means are not coupled to the receiving element of the aircraft door or panel, thereby allowing movement of the aircraft door or panel relative to the aircraft fuselage; and the second position of the securing means is a position in which the securing means are coupled to the receiving element aircraft door or panel, thereby preventing movement of the aircraft door or panel relative to the aircraft fuselage; a shaft having a longitudinal axis, the shaft comprising a bolt, a longitudinal axis of the bolt being aligned with the longitudinal axis of the shaft; at least one mounting member for mounting the shaft to the aircraft fuselage such that the shaft may be rotated about its longitudinal axis; securing means fixedly mounted to the shaft and arranged such that: rotation of the shaft about its longitudinal axis moves the securing means from being in a first position to being in a second position; the first position of the securing means is a position in which the securing means are not coupled to the receiving element of the aircraft door or panel, thereby allowing movement of the aircraft door or panel relative to the aircraft fuselage; and the second position of the securing means is a position in which the securing means are coupled to the receiving element aircraft door or panel, thereby preventing movement of the aircraft door or panel relative to the aircraft fuselage; rotation of the shaft about its longitudinal axis moves the securing means from being in a first position to being in a second position; the first position of the securing means is a position in which the securing means are not coupled to the receiving element of the aircraft door or panel, thereby allowing movement of the aircraft door or panel relative to the aircraft fuselage; and the second position of the securing means is a position in which the securing means are coupled to the receiving element aircraft door or panel, thereby preventing movement of the aircraft door or panel relative to the aircraft fuselage; a locking member for coupling to the shaft, the locking member comprising a hole, the shape of the hole corresponding to the shape of the bolt such that the locking member may be coupled to the shaft by positioning the locking member relative to the shaft such that the bolt is in the hole, such that rotation of the shaft about its longitudinal axis causes movement of the locking member; and fixing means for, when the shaft has been rotated such that the securing means are in the second position, fixedly attaching the locking member to the aircraft fuselage thereby preventing rotation of the shaft.