CCP 3157     

Art. 3157.  Special mortgage in lieu of bond

The person appointed or confirmed as succession representative may give a special mortgage on unencumbered immovable property within the parish where the succession has been opened, in lieu of the security required by Articles 3151 through 3155.  The mortgage shall be for the same amount as the security required, and shall be approved by the court before letters may be issued to him.