What was found
DURING DECENT LOST BOTH IRS, ALL F/O LIGHTS AND INSTRUMENTS, F/O EFIS DISPLAYS, & AUX & PITOT STATIC. MAINT FOUND TRANSFER BUS NR 2 C/B POPPED. INSPECTED WIRING BEHIND P6 & P18 C/B PANELS, & INSIDE AFT NLG WW ACCESS PANELS. INSPECTED J4, J5, & J20 BOXES, & BEHIND P5 PANEL. INSPECTED STANDBY INVERTER & NR 2 FIREWALL CONNECTOR. NO DEFECTS. R & R R4 RELAY & C/B C821 PER SPM. CHECK OF NR 2 TRANSFER BUS, NO SHORTS. RAN ENGS, PRESS A/C TO 3.5 PSI, BUS TRANSFER SYS NORMAL. OPERATED FLAPS IN NORMAL/STANDBY MODES, NO DEFECTS. OPS CHECK OF IRU GOOD, POWER TRANSFER TO BATTERY NORMAL. STALL WARNING COMPUTERS CHECKED GOOD. ANALYSIS OF C/B CONFIRMED FAILURE. ANALYSIS IDENTIFIED CIRCUIT BREAKER WOULD ONLY CARRY 35 AMPS.