What was found
2 EA SHORT SEAT TRACKS ON LBL9 CORRODED BETWEEN FS 559.80 TO 574. EVALUATED CORROSION ON SEAT TRACK & FOUND TO BE OUT OF LIMITS IAW SRM 53-21-49 CORROSION REMOVED IAW SRM 51-21-06, SRM 53-51-49, STATES TO USE SRM 53-21-49 FOR ALLOWABLE DAMAGE LIMITS. COMPLIED WITH EC/TC REO 601R-53-00-485 BY FABRICATING 2 SEAT RAILS, LBL9 FS 559+80 TO FS 574 IAW GREO 601R-53-00-485, REV A. REMOVED SEAT TRACKSON LBL9 AT FS 559.80-574 IAW AMM 53-00-49-000-801. INSTALLED NEW FABRICATED SEAT TRACKS LBL9, FS 559.80 TO 574 IAW AMM 53-00-49-400-801.