As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU HAS REPORT OF MULTIPLE CSS ATTEMPTS WITH FAULT LIGHT AND FAULT MESSAGE 49-31016 INSTALLATION TASK AFFECTS APU ON DEMAND IN-FLIGHT START CAPABILITY. UPON COMPLETION, CONTACT MAINTENANCE CONTROL AND REPORT THAT THIS TASK HAS AFFECTED APU IN-FLIGHT START CAPABILITY, MEL 49- 99A IS REQUIRED PRIOR TO FLIGHT. GROUNDED - YES. REMOVED AND REPLACED APU FUEL CONTROL UNIT PER AMM 49-31-11. REMOVED AND REPLACED APU LUBE MODULE PER AMM 49-91-11OPS TEST GOOD. LEAK TEST GOOD. THIS CLEARS TSR714607.