What was found
ACID SMELL IN COCKPIT IN-FLIGHT. SAME INTENSITY NOTICED WITH EITHER ACM OPERATING. ENG ANTI-ICE WAS USED FOR SHORT DURATION. DID NOT NOTICE SMELL ON GROUND WITH ACM'S RUNNING WITH BLEED SOURCE. BURNS EYES AND THROATS. NR 2 ENG REQUIRES CHANGING DUE TO HIGH OIL CONSUMPTION. CHANGED NR 2 ENG IN REF TO TC 5001 PW THROUGH STEP 74-E. P/N OFF PW 2040. S/N OFF P726657. P/N ON PW2040. S/N ON 717929.