What was found
STARTED APU ON LANDING IN PHX, TURNED ON APU BLEED & IMMEDIATELY STARTED SMELLING A DIRTY SOCK SMELL. R & R APU NR 4 TURBINE BEARING CAVITY VENT TUBES PRESS & RETURN LINE PACKING’S IAW AMM 49-91-53-000-001-A & 49-91-53-400-001-A. OPERATIONS & LEAK TESTED GOOD. COMPLIED WITH JOB CARDS 26L00021001 & 26L00021002 FOR TROUBLE SHOOTING & REPAIR OF APU OIL SMELL. COMPLIED WITH DECONTAMINATION OF ESC IAW CARD 26L00021004. ACFT OK FOR SERVICE.