What was found
CORROSION ON PASSENGER CABIN SEAT TRACK AT LBL 25 BS 360+15-380; BS 400+1; BS 420+11. / REMOVED CORROSION FROM WELL OF PASSENGERS CABIN SEAT TRACK LBL 25; FROM BS360+10 - BS380; L=10.0' X W=0.900' X D=0.045.<BR>AND FROM BS400+1 - BS420+11; L=30.0' X W=0.900' X D=0.012'. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-52-1A-1.<BR>ID TOOL: ATS1738; S/N: UNKNOWN; D/D:09/2022.<BR>ID TOOL: ATS2472; S/N: UNKNOWN; D/D: 12/2022REMOVED PASSENGER CABIN SEAT TRACK LBL25 FROM BS360+10 - BS480; WL208; PER SRM 51-40-02-0G-0.; LOCATED AND DRILLED NEW SEAT TRACK BS 360+10 TO 480 LBL 25 WL 208 PER SRM 51-40-05-0G-0 AND DWG 143A5300] INSTALLED FASTENERS COMMON TO FLOOR BEAMS BS 400-480 LBL25 WL208 IAW DWG 143A5300; SRM 51-40-02-0G-0;[08] INSTALLED NEW PASSENGER CABIN SEAT TRACK LBL25; BS360+10 - BS480; WL 208 PER SRM 51-40-02-0G-0 & BOEING DWG. 143A5300; REV. J<BR>ID TOOL: ATS2657; S/N: 0821900635; D/D: 08/2022;<BR>ID TOOL: PER1780; S/N: A97G23122; D/D: 02/2023.<BR>ID TOOL: E12062; S/N: SP02F31924; D/D: 12/2022.;[09] MATCH DRILLED FLOOR BOARD HOLES IAW SRM 51-40-05;[10] UPDATED PARTS.;[11] VERIFIED MATCH DRILL;[12] VERIFIED;[13] VERIFIED STEP ACTION ITEM #1;[14] UPDATED STEP 8.<BR>INSTALLED NEW PASSENGER CABIN SEAT TRACK LBL25; BS360+10 - BS480; WL 208 PER SRM 51-40-02-0G-0 & BOEING DWG. 143A5300; REV:-<BR>ID TOOL: ATS2657; S/N: 0821900635; D/D: 08/2022;<BR>ID TOOL: PER1780; S/N: A97G23122; D/D: 02/2023.<BR>ID TOOL: E12062; S/N: SP02F31924; D/D: 12/2022.