As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACRID ODOR FROM AIR CONDITIONING SYS ON DEPARTURE. CREW ISOLATED LT PACK OFF AND ODOR DISSIPATED. CREW STATED IT SMELLED LIKE HYD FLUID. LT PACK INOP. ENGINE HISTORY SHOWS THAT ENGINE WAS REMOVED DUE TO OIL PUDDLE AT NR 3 BEARING AREA, ACCOMPLISHED BORESCOPE OF THE ENGINE NR 1, LOOKING FOR EVIDENCE OF OIL IN THE NR 3 BEARING COMPARTMENT. NO OIL FOUND BUT STREAKING PRESENT COMING FROM HOLES ON HUB & ON IGV'S AND HPC BLADES. REPLACED NR 1 ENGINE.