As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN DOING THE APU SHUFFLE AND APU BLEED VALVE SELECTED TO OFF, THE APU SHUTDOWN WITH A FAULT LIGHT. (<P>TRANSFERRED TO MDDR 112283 IAW DDG 49-11-01A CAT 'C'. </P><P>LP 1073282 - M3: T/S APU PER FIN 49-11-FT987. ECU CODE SHOWED FILTER SW (GEN), MCC NOTIFIED. PART ORDERED. DMI 112283 CONTINUES.</P><P>LP 1073286 - M2: REMOVED AND REPLACED APU GEN OIL FILTER DIFFERENTIAL PRESSURE SWITCH IAW AMM 49-27-15. OPS CHECK OF APU GOOD AT THIS TIME. MCC NOTIFIED. THIS CLEARS DMI #112283. PLACARDS REMOVED.</P>)