(a)For aircraft with one of the following serial numbers: UE-2 through UE-68, UE- 70 through UE-72, or UE-74 through UE-77; inspect the cabin partition to ensure that a right-hand partition bracket, part number 129-530043-79, exists. If this bracket does not exist, install this bracket with part number MS27039-1-09 screws and part number AN960PD10 washers in accordance with Kit Drawing No. 129-5007 as referenced in Beech Service Bulletin 2556 Revision 1.
(b)For all affected serial numbers (UE-2 through UE-92), improve the right-hand forward partition installation in accordance with Kit Drawing No. 129-5007, as referenced in Beech Service Bulletin 2556 Revision 1.