As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUNKY SMELL DESCENDING THRU 5000'-4000' COMING FROM PACK 2 AND GOT IT ALSO FROM APU BLEED-REF. TSM 05-50-00-810-851-A INSP AND FOUND APU LEAKING OIL AT GEARBOX FLANK SEE L.P. 3079806-1 APU OIL LEAK. R/R RECIRC FILTERS IW AMM 21-21-41 PERF. DECONTAMINACION OF ECS PER AMM 21-00-00 NO ODOR NOTED AT THIS TIME. A/C OK FOR SERVICE.