What was found
MASTER WARNING MAIN DECK FIRE INDICATION. FOLLOWED QRH PROCEDURES, REF LP 769723-M4. PERFORMED MAWEA INPUT MONITORING ON MASTER MONITOR CARD A & B, RESULTS SATISFACTORY. PERFORMED TEST OF SMOKE DETECTION SYS FOR CARGO AREA SYS, RESULTS SATISFACTORY IAW MM 26-10-01, NO MSG NOTED, REF LP 769722-1. INVESTIGATED & NO SMOKE OR FIRE EVIDENCE WAS NOTED. TROUBLE SHOT & FOUND COALESCER BAG WAS TORN ON PACK 3. ALL PACK COALESCER BAGS REPLACED & OK IAW MM 21-51-05.