As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU AIR INOP.(<P>TRANSFERRED TO MDDR #107318 PER 49-11-1-1<BR /></P><P>REMOVED AND REPLACED APU SURGE VALVE FILTER IAW B767 AMM 49-53-06 OPS CHECKED NORMAL, NO LEAKS FOUND. APU AIR PARAMETERS NORMAL DURING ENGINE START/RUN. THIS CLEARS MDDR 107318, PLACARD REMOVED.<BR /></P>)