What was found
TURBINE OIL FUMES\DIRTY SOCK SMELL IN CKPT DURING CLIMB FROM 12,000 FT TO FL250, HP VALVES CLOSED-CL POWER, HIGH FLOW SELECTED WITH NO IMPROVEMENT, A/C IN PRECIP & CLOUDS, APU OFF PRIOR TO TAKE OFF& NO ASSOCIATED FUMES DURING GROUND OPS, DFDR EVENT P/B ACTIVATED, AIDS PRINT AND FA'S REPORTED SMELL FORE AND AFT. DESCENT-FUMES RETURNED STRONGER THAN IN CLIMB-IN CLOUDS-TO LANDING, HP VALVES OPEN, AIDS PRINT FOR TREFERENCE, DVDR EVENT PUSHED, FA REPORTS FUMES ODOR MUCH STRONGER IN FWD CABIN AND AFTER LANDING-APU BLEED IMPROVED ODOR; ACCOMPLISHED SECTION B OF INFO NOTICE 2017-T015A. VERIFIED OIL ODOR COMING FROM NR 1 ENG BLEED. NR 2 ENG BLEED OK. ACCOMPLISHED BOROSCOPE ON NR 1 ENGINE IAW INFO NOTICE 2017-T015A. FOUND NO OIL EVIDENCE IAW AMM 72-00-00-000-012. R & R NR 1 OZONE FILTER IAW AMM 21-51-41, OPS CHECKED AND LEAK CHECKED GOOD. UPON LEAK CHECK OF OZONE FILTER FOUND NR 1 PACK RE-HEATER CRACKED, R & R THE NR 1 PACK REHEATER, CHECKED GOOD IAW AMM 21-52-31-00-001-A. OPEN LEAK CHECK OF REHEATER FOUND NR 1 PACK CONDENSER CRACKED, R & R THE NR 1 PACK CONDENSER, OPS CHECKED GOOD IAW AMM 21-52-32.