What was found
UNDERCOAT MISSING ON CONCAVE SIDE OF RIGHT ENGINE FAN BLADE DURING OVERNIGHT AND APPLICATION OF 1000 F WING INSPECTION AT MEX, IT WAS DETECTED UNDERCOAT MISSING ON CONCAVE SIDE OF RIGHT ENGINE FAN BLADE. MAINTENANCE PERSONNEL PERFORMED A REVISION, DETECTING TWO AREAS WITH MISSING MATERIAL OF 0.750” OF DIAMETER; RIGHT ENGINE FAN BLADE SET WAS REMOVED IAW DMAC-B787-A-G72-22-02--01A-520A-A AND RIGHT ENGINE FAN BLADE WAS REPLACED IAW DMC-B787-A-G72-22-02-01A-720A-A, ALL CORRECT.