What was found
EWR T785/15 EN ROUTE, ON CLIMBOUT AT 20,000 FT EXPERIENCED TWO COMPRESSOR STALLS FROM RT ENGINE. RT ENGINE LT AT IDLE AND LANDED EWR WITHOUT INCIDENT. AIRCRAFT OUT OF SERVICE FOR EVALUATION. ON BOROSCOPE OF 6TH STAGE COMPRESSOR BLADES FOUND 18 DAMAGED BLADES AND 1/4 OF 1 BLADE MISSING. NINTH STAGE 30 DAMAGED BLADES AND 1/4 OF 1 BLADE MISSING. FIFTEENTH STAGE ALL BLADES DAMAGED. RT ENGINE REPLACED PER WORKCARD M577101. SYSTEM GROUND CHECKED NORMAL OPERATION. --CLOSED--