AN EMB 120 FLC NOTES A LOSS OF THEIR EMER DC BUS #2 WHICH EVENTUALLY RESULTED IN 2 GARS FOR GEAR EXTENSION AND CHKLIST COMPLIANCE PRIOR TO LNDG AT LAX; CA.

Narrative

ENTERING DOWNWIND TO RWY 24R AT LAX THE EMER BUS OFF LIGHT ILLUMINATED ON OVERHEAD PANEL; ELECTRICAL ON MAP ILLUMINATED; AND CAUTION LIGHT WAS FLASHING. I NOTED THE LOSS OF MANY INDICATIONS AND IMMEDIATELY CONSULTED THE QRH. RAN EMER BUS OFF LIGHT CHKLIST; CONSULTED AFM 3-9; AND DETERMINED LOSS OF EMER DC BUS #2. NEEDED MORE TIME TO GO OVER ITEMS AND RERUN QRH. THEN TOOK ACFT AND HAD FO RUN QRH. WE ELECTED TO GO AROUND DURING THESE PROCEEDING TO TAKE THE TIME TO RUN CHKS. HAVING NOT DECLARED AN EMER AT THIS TIME; WE GOT BACK IN LINE TO LAND AT LAX. WX WAS A HIGH OVCST GOOD VISIBILITY. ON ILS GEAR WOULD NOT COME DOWN VIA GEAR HANDLE. ASKED TO GO AROUND AND HEAD OVER PACIFIC OCEAN TO HOLD AND WORK ON GEAR PROB. CALLED MAINT CTL VIA ATLANTA RADIO FOR EXTRA HELP. GEAR DID NOT COME DOWN BECAUSE OF ELECTRICAL LOSS; AND WE USED ELECTRICAL OVERRIDE SWITCH WITH THE QRH AS OUR GUIDE. GEAR CAME DOWN AND WE HAD 3 GREEN LIGHTS. I ELECTED TO ASK FOR EMER VEHICLES BECAUSE OF USING AN ABNORMAL PROC TO LOWER LNDG GEAR. LANDED UNEVENTFULLY. PAX BRIEFED HONESTLY 4 TIMES. 1) ELECTRICAL PROB; 2) PROB OK; 3) GEAR PROB; AND 4) GEAR PROB FIXED.