What was found
ACFT GROUNDED: DURING CRUISE AFT F/A CALLED & SAID THEY SMELLED A STRONG ODOR OF SULPHURIC LIKE ODOR. FWD F/A CALLED & SAID SAME THING. CABIN JUMPSEATER REACHED UP & SHUT OFF LAV, ATTN, READ POWER BUTTONS ON CIDS PANEL. ODOR DISAPPEARED & NO FURTHER ISSUES. STONGEST ODOR AROUND 2L & 2R ACCORDING TO JUMPSEAT F/A. MX ACCOMP WORK CARD 26L0002001 & DURING CFDS INTERROGATION & AMM 21-21-00 OPS TEST FOUND NR 2 RECIR FAN WAS TRIPPED & TRIPPED ITS CIRCUIT BREAKER & EMITTED A SULFUR-LIKE ODOR. THE FAN SITS IMMEDIATELY UNDER AREA OF CABIN F/AS REPORTED INITIAL AREA OF ODOR & STRONGEST AREA OF ODOR DURING EVENT. CFDS REPORTING INDICATED A CLASS 3 EVENT OCCURRED IN CORRESPONDENCE OF REPORTED EVENT. NO OTHER WORK CARD FINDINGS NOTED & NO APU FLUID INGESTION FOUND. MX REPLACED NR 2 CABIN RECIRC FAN & ACCOMP A SATIS OP CHECK IAW AMM 21-21-51.