What was found
BURNING RUBBER, WET RAG ODOR COMING FROM VENTS THROUGHOUT ENTIRE AIRCRAFT. SCENT BEGAN DURING STARTUP, DISSIPATED DURING CRUISE, BEGAN AGAIN DURING DESCENT. C/W WORKS COPE AS REQUIRED. ITEM 3 C/W FIM TASK 21-20-00-810-A, NO FAULTS FOUND. ITEM 4 IDENTIFIED COFFEE AND SODA INGESTED AND COKED INTO PACK 2 INLET, COVERING THE PRECOOLER AND POSSIBLE INTERNAL ACM CONTAMINATION. ITEM 5 C/W FIM TASK 21-20 -00-810-803-A. WHEN PERFORMING CHECKS WITH APU BLEED, THERE WAS A SLIGHT BURN SMELL FOR 30 SECONDS AND CLEARED. WHEN PREFORMING THE OPERATION OF PACK 1 WITH ENG 1 NO FAULTS OR SMELLS NOTED . WHEN PERFORMING THE OPERATIONAL CHECKS WITH NUMBER 2 ENG AND NUMBER 2 PACK, A SMELL OF CHOCOLATE WAS NOTED. AIRCRAFT IS TRIAD RELEASED WITH NUMBER TWO PACK MEL'D. SEE AML 115302370 FOR DEFERRAL OF PACK 2.