Narrative:

During my exterior preflight in ZZZ I noticed minor nicks in the first stage compressor blades of my aircraft. Earlier that day, I had seen similar 'damage' to another aircraft and was told by company maintenance that the blades had been svced and were ok. I mentioned this anomaly to my captain who was dealing with maintenance on 2 separate issues (ice proof valve and deep puncture wound of r-hand main tire). After a 1 hour delay on our final leg of a day, neither of us pressed the issue with maintenance because of what we had been told by another mechanic earlier that day. We operated the flight with no abnormalities of any kind. Upon arrival in xyz, the first officer of the next crew noticed major damage to some of the compressor blades. The engine eventually had to be replaced there in xyz.

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Original NASA ASRS Text

Title: A DC9 WAS DISPATCHED WITH FOD TO THE R ENG COMPRESSOR BLADES THAT WERE OUT OF MAINT MANUAL LIMITS.

Narrative: DURING MY EXTERIOR PREFLT IN ZZZ I NOTICED MINOR NICKS IN THE FIRST STAGE COMPRESSOR BLADES OF MY ACFT. EARLIER THAT DAY, I HAD SEEN SIMILAR 'DAMAGE' TO ANOTHER ACFT AND WAS TOLD BY COMPANY MAINT THAT THE BLADES HAD BEEN SVCED AND WERE OK. I MENTIONED THIS ANOMALY TO MY CAPT WHO WAS DEALING WITH MAINT ON 2 SEPARATE ISSUES (ICE PROOF VALVE AND DEEP PUNCTURE WOUND OF R-HAND MAIN TIRE). AFTER A 1 HR DELAY ON OUR FINAL LEG OF A DAY, NEITHER OF US PRESSED THE ISSUE WITH MAINT BECAUSE OF WHAT WE HAD BEEN TOLD BY ANOTHER MECH EARLIER THAT DAY. WE OPERATED THE FLT WITH NO ABNORMALITIES OF ANY KIND. UPON ARR IN XYZ, THE FO OF THE NEXT CREW NOTICED MAJOR DAMAGE TO SOME OF THE COMPRESSOR BLADES. THE ENG EVENTUALLY HAD TO BE REPLACED THERE IN XYZ.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.