What was found
LT AFT DOUBLER (FLOOR) FR 19-20 LBL 12.5" TO 36" HAS CORROSION AT 2 LOCATIONS; MONUMENT FASTENER HOLE AND SEAT TRACK EDGE LBL 12.5". REMOVED AND REPLACED DOUBLER REF. SRM 51-40-08. RESTORED SURFACE PROTECTION REF. SRM 51-23-04, 51-23-05, AND 51-23-06. SEE W/O H6609 SN 406 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.