What was found
FLT#1833, BOS-SFO. 'DIRTY SOCK SMELL IN COCKPIT & FWD CABIN CLIMBING OUT OF BOSTON (ALSO SLIGHT SMELL CHALF) UNTIL ABOUT 15K THEN STARTED DISSIPATING. BETTER WITH PACK 1 OFF. DESCENT: STRONGER FUMES EVEN WITH PACK 1 OFF; COMPLIED WITH INFORMATION NOTICE 2017-T015, SECTION B2. IDENTIFIED ODOR TO BE OF LEVEL 3 DUE TO OIL IN APU. APU BLEED DEFERRAL ON LP 4088610, ITEM 1 (PERFORMED APU COMPRESSOR CLEANING PER TASK CARD #A320-49-20-00-100-004 AND LEVEL A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM IAW TASK 21-00-00615-802-A THIS CLEARS MDDR 558752. PLACARD REMOVED . MX-4 UPDATED.). DECONTAMINATION LEVEL 3 WAS ACCOMPLISHED PER TSM 05-50-00-810-831A & AMM 21-00-00-615-804A. AIRCRAFT IS OKAY FOR SERVICE.'