What was found
FLT#2020, FLL-ORH. 'DURING T/O AND INITIAL CLIMB MODERATE OIL (MAGIC MARKER LIKE) ODOR IN FLIGHT DECK. IRRITATING TO NOSE. ODOR ISOLATION CHECKLIST PACK 1 OFF SEEMED TO ELIMINATE IT. ( PACKS ); REF LOGPAGE 4009050, ITEM 1 AND ITEM 2 FOR BORO INSPECTION ON ENGINE 1 AND INSPECTION OF PACK. NO SIGNS OF OIL LEAK. ALSO LOGPAGE 4009048, ITEM 1 FO PACK 1 OZONE FILTER REPLACEMENT. PERFORMED #1 ENGINE RUN IAW 71-00-00. PERFORMED PACK 1 BURN IAW TSM 05-50-00-810-085. LEVEL 1 NO ODOR PRESENT AT THIS TIME. A/C OK FOR SVC. THIS CLEAS MDDR. MX-4 UPDATED, MCC NOTIFIED PLACARD REMOVED.