What was found
AIRCRAFT 5034, ON TAKEOFF TO 3000FT FAINT ACRID ODOR. @33000 FEET 54 MIN INTO FLIGHT STRONG SOCK/ACRID ODOR FOR 2MIN DURING AIRCRAFT SLOWING. ON DESCENT 18000FT -14000FT STRONG ODOR AGAIN. APPEARS TO BE RELATED TO THURST CHANGES. CORRECTIVE ACTION: PERFORMING LEVEL B AND WORKCARD 2100-2005 FOR DUCT BURNOUT. DUCT BURNOUT COMPLETED LEAK CHECKS GOOD. WORK CARD 2100-2005 COMPLETED. REPLACED NBR 1 ENGINE (LP 7203510, 1269350)