What was found
FOLLOW-UP TO REPORT OF APU NOT STARTING IN FLIGHT WITH FAULT 49-41010. (#PRI2/ETOPS) ETOPS SIGNIFICANT SYSTEM 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. C/W TSR711671, ALL PROCEDURES; REMOVED AND REPLACED APU LUBE MODULE I.A.W. B737-900 AMM 49-91-11. OPS CK AND LEAK CK GOOD, NO DEFECTS NOTED. THIS CLEARS TSR711671.