What was found
CORRODED SEAT TRACK -Y1292 LOCATED AT FR 66 AT AFT GALLEY AREA. REPLACED SEAT TRACK -Y1292 LOC BTW FR64 TO FR66 AT AFT GALLEY AREA IAW SRM 51-42-11, SRM 51-72-11, AND DWG 10N01036. TOOK MEASURE CORROSION WERE: L: 0.620 INCH, W: 0.450 INCH, D: 0.035 INCH, (LP: 1551633). AIRCRAFT WAS GROUNDED.