Patent ID: 8827325

Claim:
Locking mechanism for a cargo door or a door in a fuselage cell of an aircraft, the locking mechanism comprising: a number of fuselage cell fitments which are disposed in an area of a loading edge of the cargo door, and a corresponding number of cargo door fitments which are fixed in a lower edge area of the cargo door, wherein locking the cargo door is carried out by a sliding element and the cargo door fitments can be brought into positive locking engagement with the fuselage cell fitments wherein peripheral loads of the fuselage cell are transferred substantially by a load transfer surface and radial loads are taken up substantially by the sliding element, characterised in that the at least one cargo door fitment is designed as a forked fitment with two arms connected through a horizontal web provided with a securing device for the supplementary self-securing of the sliding element against unintended opening, wherein the securing device comprises a security bar having at least one security cam, wherein, when in a locked state of the cargo door, the at least one security cam can be brought into at least one security recess in the sliding element.