What was found
MAJOR REPAIR DURING HEAVY CHECK, CROSSBEAM FRAME 17 AREA BETWEEN RT FUSELAGE AND SEAT TRACK 10.748 IS CORRODED. MAINTENANCE PERFROMED PERMANENT REPAIR OF CROSSBEAM FRAME 17 AS MARKED AREA BETWEEN RT FUSELAGE AND SEAT TRACK 10.748 IAW ETD 2015-170-084991, REV B, SEE CONTINUATION CARDS FOR WORK DETAILS. PN 170-21769-405.