As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF AND CLIMB IN MODERATE RAIN, APU AND BLEED ON, AFTER THRUST REDUCTION AND BLEED RECONFIGURATION, A STRONG DIRTY SOCKS ODOR WAS REPORTED BY F/A IN CABIN AND COCKPIT. MX COMPLIED WITH TROUBLESHOOTING AND DETERMINED APU TO BE SOURCE OF ODOR. REPLACED APU IAW J/C 26L31049005. FUNCTIONAL CHECK NORMAL. FOUND RUBBER BOOT TO SURGE VALVE BLOWN OUT. R & R BOOT. LEAK CHECKED GOOD. COMPLIED WITH DECONTAMINATION OF ESC IAW J/C 26L00021002 AND 26L00021004.