What was found
INFO TO MAINT BAD MUSTY SMELL FROM AC UNIT WHEN ON GROUND AND WHEN SELECTING FLAPS IN AIR (PASSENGERS COUGHING) // PERFORMED TSM 49-00-00-810-831-A. AFTER SHUTDOWN OF APU FOUND LEAK ON THE RIGHT SIDE OF APU GENERATOR CASE. 14NOV2021 #2196795 REMOVED APU GENERATOR REF AMM 24-23-51. DIVAN 2226041 14NOV21. INSTALLED NEW APU GENERATOR PER AMM 24-23-51. UP TO STEP 4F(3). 15NOV2021 #2196795. CONTINUE FROM STEP 4G OPERATED APU W/PACKS. NO SMELL INDICATED. COMPLETED REMAINING STEPS PER AMM AMM 24-23- 51. OPS CHECK LEAK CHECK GOOD. ACCOMPLISHED DECONTAMINATION OF THE (ECS) PER AMM 21-00-00-615-805A. NO ODORS DETECTED. OK FOR SERVICE. GENERATOR, APU, OFF 33-2423-9-0001 S/N 04527 ON 33-2423-9-0001 S/N 04183