What was found
DURING HEAVY MAINTENANCE: RH WING, UPPER SURFACE RIB 18-RIB 19, STGR 14 WITH CORROSION POINTS; REF. MEX WO:1318489,1327754,1328846 N/R S/N: 00337. CORR. POINTS AT RHW TOP SKIN UPPER SURF. BETWEEN RIB 18/ RIB 19 STGR 14 WAS REMOVED. REF MEX EO TRE-2057203, JETBLUE EC A24-1207-01.