What was found
UNIDENTIFIED ODOR IN FLIGHT DECK AND CABIN. ODOR STARTED DURING DEPARTURE SHORTLY AFTER TAKEOFF, STOPPED AFTER 3 MINS. ODOR RETURNED AT TOP OF DESCENT. USING QRH FUMES, ODOR ISOLATION CHART, SWEET, WET DOG, RUBBER TYPE ODOR, CAT A. PERFORMED BORESCOPE INSPECTION ON LT ENG STAGES 1,2, & 3 OF HPC LOOKING FOR OIL RESIDUE, OIL WETNESS DUE TO OIL ODOR, FUMES, SMOKE IN THE CABIN OR COCKPIT. REFER TO SUBTASK 72-00-00-810-021. FOUND OIL RESIDUE ON IGV & STAGE 1. ACCOMPLISHED E1 COMPRESSER WASH IAW LMM 72-00-00 CLEANING 002. NO ODOR OR FUMES NOTED. ENG: GE: CF348E, SER: 902528.