What was found
ON FINAL APPROACH, A/C LOST MULTIPLE ELECTRICAL COMPONENTS INCLUDING NR 1 RADIO, NR 1 & 2 FWD FUEL PUMPS, ANTI-SKID, TR-1 SHOWED ZERO, AUTO BRAKE, YAW DAMPER, NR 1 ELEC HYD, EMERGENCY EXIT LIGHTS, NR 1 N 2, & FUEL FLOW GUAGE. A/C LANDED W/OUT PROBLEM. NR 1 TR CB PHASE A NR C806 FOUND POPPED. MX FOUND A1 CONNECTOR & CONTACT ON TRANSFER BUSS R3 RELAY BURNED. WIRING REPAIRED IAW SWP 20-10-13. R3 RELAY R/R, & TESTED IAW MM 24-21-00-501. NR 1 TR R/R AS A PRECAUTION IAW MM 24-21--31-401. OPS CHK GOOD. ENGINEERING CONCLUDED THAT EITHER THE TERMINAL LUG WAS LOOSE OR POSSIBLY ELECTRICAL DAMAGE OF A1 CONTACT POINTERS OF THE RELAY RESULTED DUE TO FREQUENT CONTACT ARCING.