Southwest Airlines

1. Boeing Service Bulletin 737-57-1293, Rev. 2, Section 1.A. Effectivity, for group 2 is incorrect; the correct effectivity should be 2131-2837 instead of the stated 2131-2437. Service Bulletin Figure 4 and 16 which is for group 1 and 2 accomplishes a modification of the 116A5522-1 hinge assembly which was installed on aircraft line numbers 1 (YA001) thru 2837 (YM377). 2. Boeing Service Bulletin 737-57-1293, Rev 2, Section 2.C.3., Parts Modified and Re-identified for both groups are incorrect. Both groups are missing early configurations. Figures 4, 5, 6, 16, 17 and 18 calls to modify specific P/N’s but are missing these early configurations. Also, Group 2, Configuration 1 calls to Modify 116A8510-13/-14 which is not applicable to this group.